[[Category:Anti-consumer practices]]
[[Category:Common terms]]

[[wikipedia:Digital_rights_management|'''Digital rights management''']] (DRM), alternatively known as '''digital restrictions management'''<ref>{{Cite web |last=Stallman |first=Richard |title=Opposing Digital Rights Mismanagement |url=https://www.gnu.org/philosophy/opposing-drm.en.html |archive-url=https://archive.is/XwqaH |archive-date=2023-05-02}}</ref>, broadly refers to any kind of access control technology that is used to deliberately restrict the usage of media content or devices after the sale. It is typically used by a seller to prevent unauthorized distribution or replication of their product. Implementations of DRM can range from very simple (such as a basic disc check) to extremely complex executable binary obfuscation (such as Denuvo).

<blockquote>DRM creates a damaged good; it prevents you from doing what would be possible without it. – Defective by Design<ref>https://www.defectivebydesign.org/what_is_drm</ref></blockquote>

==DRM in video content==

Attempting to prevent the copying of video content is one of the most common and long-standing uses of DRM. The idea of using copy obstruction on video content predates the term "DRM", one early example being the "Automatic Gain Control" requirement in VCRs used to enforce the "Macrovision" copy-protection scheme.<ref>[https://www.law.cornell.edu/uscode/text/17/1201#k_1_A 17 U.S. Code § 1201 - Circumvention of copyright protection systems, K.1.A.i]</ref><ref>[https://cs.stanford.edu/people/eroberts/courses/cs181/projects/1999-00/dmca-2k/macrovision.html Macrovision Demystified], Stanford CS181. </ref> This requirement resulted in VCRs and compliant analog to DV capture cards not being able to record commercial VHS tapes{{citation needed}}.

From 1996, DVDs began to feature the "Content Scramble System" (CSS), an encryption based DRM. CSS was successfully circumvented as early as 1999, less than five years after its introduction, partly due to the limited length of the 40-bit encryption key, which was used to comply with US government export regulations of the time.<ref>http://www.cs.cmu.edu/~dst/DeCSS/FrankStevenson/mail1.txt</ref><ref>[https://web.archive.org/web/20000302000206/http://www.dvd-copy.com/news/cryptanalysis_of_contents_scrambling_system.htm "Cryptanalysis of Contents Scrambling System", Frank A. Stevenson, archived from dvd-copy.com]</ref> Following this, DVDs as well as HD-DVDs and Blu-Rays would implement other types of DRM, one of them being the "Advanced Access Content System".<ref>{{Cite web |title=Advanced Access Content System (AACS) |url=http://www.aacsla.com/specifications/specs091/AACS_Spec_Common_0.91.pdf |url-status=dead |archive-url=https://web.archive.org/web/20070302130221/http://www.aacsla.com/specifications/specs091/AACS_Spec_Common_0.91.pdf |archive-date=2 Mar 2007 |access-date=20 Apr 2025}}
</ref> When the AACS key was similarly extracted, the AACS Licensing Administrator began issuing cease-and-desist letters to websites where the key was posted.<ref>{{Cite web |date=17 Apr 2007 |title=AACS licensor complains of posted key |url=https://lumendatabase.org/notices/21725 |url-status=live |access-date=20 Apr 2025 |website=Lumen}}</ref> Another form of Blu-Ray DRM, [[Cinavia]], uses a form of audio watermarking that makes certain releases unplayable in devices that are not equipped to recognize it, a notable example being Sony's Playstation 3.<ref>{{Cite web |last=Ganesh |first=T. S. |date=21 Mar 2012 |title=Cinavia DRM: How I Learned to Stop Worrying and Love Blu-ray’s Self-Destruction |url=https://www.anandtech.com/show/5693/cinavia-drm-how-i-learned-to-stop-worrying-and-love-blurays-selfdestruction/2 |url-status=live |access-date=20 Apr 2025 |website=AnandTech}}</ref>

In the attempt of preventing video ripping via a capture card, modern displays, optical disc players, and computers use the [[wikipedia:High-bandwidth_Digital_Content_Protection|High-Definition Content Protection]] system to encrypt display signals.<ref>{{Cite web |title=About DCP |url=https://www.digital-cp.com/about_dcp |url-status=live |access-date=20 Apr 2025 |website=www.digital-cp.com}}</ref> For example, [[Netflix stream-quality controversy|Netflix will refuse]] to stream content at the full resolution advertised for the plan if the user is not streaming through an HDCP compliant video card and display.

For terrestrial over-the-air broadcast, in 2023 [[ATSC 3.0]] pilot stations across the United States started to encrypt their signals,<ref>{{Cite web |last=Seidman |first=Lon |date=15 May 2023 |title=Broadcasters Roll Out Restrictive DRM Encryption on ATSC 3.0 Broadcasts |url=https://blog.lon.tv/2023/05/15/broadcasters-roll-out-restrictive-drm-encryption-on-atsc-3-0-broadcasts/ |url-status=live |access-date=20 Apr 2025 |website=Lon.tv}}</ref> leaving those that bought ATSC 3.0 tuners that could not decrypt broadcasts unable to watch the newly encrypted channels. Those tuners that were later certified by the A3SA authority to decrypt signals also had potential restrictions placed as part of the DRM scheme, such as blocking recordings and remote tuner access.<ref>{{Cite web |last=Newman |first=Jared |date=28 Jul 2023 |title=NextGen TV’s DRM puts future of the over-the-air DVR in doubt |url=https://www.techhive.com/article/2009693/nextgen-tv-drm-puts-future-of-the-over-the-air-dvr-in-doubt.html |url-status=live |access-date=20 Apr 2025 |website=TechHive}}</ref>

==DRM in audio content==
Another place DRMs were used in was audio content, which was rarely implemented due to audio's analog nature (compared to video and software), making it questionable whether it could effectively block data replication. The most notable application of audio DRM was [[wikipedia:MediaMax|MediaMax]], which essentially functioned as malware to prevent users from simply playing these audio discs on Windows and macOS. There was also the less-notable [[wikipedia:Extended_Copy_Protection|Extended Copy Protection]] (XCP) DRM, however it did leave [[Sony]] in hot water<ref>{{Cite web |title=Sony BMG copy protection rootkit scandal |url=https://en.wikipedia.org/wiki/Sony_BMG_copy_protection_rootkit_scandal |url-status=live |access-date=20 Apr 2025 |website=Wikipedia}}</ref>, dubbing this form of DRM also as the Sony Rootkit.

==DRM in software==
Most discussions about DRM often associate its use with some form of software restriction, from the simple product key, to the infamous [[Denuvo]] DRM. Historically, DRM started off with simpler physical techniques, such as decoder wheels and [[wikipedia:Lenslok|LensLok]]. The effectiveness of these systems varied, and many cracking groups simply found ways around them, especially since second-hand copies of software that used these primitive forms of DRM could easily become lost, damaged, or worse, fail to function with certain hardware.<ref>{{Cite web |last=Whitehead |first=Ben |date=15 Apr 2010 |title=Banging the DRM |url=https://www.eurogamer.net/banging-the-drm-article?page=2 |url-status=live |access-date=20 Apr 2025 |website=EuroGamer}}</ref> This has essentially sparked a game of cat and mouse that continues to fester, especially for the gaming community, to this day.

==Consumer rights issues with DRM==
DRM, by definition, is designed to make content less compatible with devices. This means there is a higher likelihood of software or hardware refusing to play content due to buggy or overly restrictive DRM. For example, with the aforementioned Netflix HDCP requirement, it is not enough for the display you intend to watch the content on to support HDCP—all monitors connected to the system must support it.<ref>{{Cite web |title=Netflix requires all monitors to be HDCP 2.2. How can I get around this? |url=https://old.reddit.com/r/pcmasterrace/comments/1avkwtb/netflix_requires_all_monitors_to_be_hdcp_22_how/ |url-status=live |access-date=20 Apr 2025 |website=Old Reddit}}</ref><ref>{{Cite web |title=How do I get Netflix working at 4k on my second monitor? |url=https://old.reddit.com/r/netflix/comments/mam2l9/how_do_i_get_netflix_working_at_4k_on_my_second/ |url-status=live |access-date=20 Apr 2025 |website=Old Reddit}}</ref><ref>{{Cite web |title=How to use Netflix on your Windows computer or tablet |url=https://help.netflix.com/en/node/23931 |url-status=live |access-date=20 Apr 2025 |website=Netflix Help Center}}</ref> This means that on PCs with multi-monitor setup PC, older but fully functional monitors cannot be used as secondary screens without violating Netflix’s DRM restrictions.

Such requirements are not always clearly disclosed. When they are, they are often buried in the Terms of Service or, in Netflix's case, require navigating through multiple FAQ pages. Furthermore, some content may surreptitiously install DRM without the knowledge or consent of the user, such as in the Sony Rootkit scandal.<ref>{{Cite web |date=31 Oct 2005 |title=Sony, Rootkits and Digital Rights Management Gone Too Far |url=http://blogs.technet.com/b/markrussinovich/archive/2005/10/31/sony-rootkits-and-digital-rights-management-gone-too-far.aspx |url-status=dead |archive-url=https://web.archive.org/web/20150317040653/http://blogs.technet.com/b/markrussinovich/archive/2005/10/31/sony-rootkits-and-digital-rights-management-gone-too-far.aspx |archive-date=17 Mar 2015 |access-date=20 Apr 2025 |website=Mark Russinovich's Blog}}</ref> Such software may contain exploits that can compromise the security of the user's PC.<ref>{{Cite web |last=Krebs |first=Brian |date=10 Nov 2005 |title=Virus Writers Exploit Sony Anti-Piracy Software |url=http://blog.washingtonpost.com/securityfix/2005/11/virus_writers_exploit_sony_ant.html |url-status=dead |archive-url=https://web.archive.org/web/20061116191907/http://blog.washingtonpost.com/securityfix/2005/11/virus_writers_exploit_sony_ant.html |archive-date=16 Nov 2006 |access-date=20 Apr 2025 |website=Washington Post}}</ref>

DRM in video games has frequently been implemented in an intrusive manner, hurting load times and performance.<ref>{{Cite web |last=Kessler |first=Ana |date=25 May 2023 |title=Testing Reveals Games with Denuvo Launch Up to Four Times Slower |url=https://80.lv/articles/testing-reveals-games-with-denuvo-launch-up-to-four-times-slower/ |url-status=live |access-date=20 Apr 2025 |website=80.lv}}</ref> This behavior has been more a result of negligent usage of the DRM rather than deliberate malicious intent.

DRM failures can also come as a surprise. For example, with a YouTube Premium subscription, you can "Download videos to watch offline", but such videos are only available for 48 hours without an internet connection.<ref>{{Cite web |title=Watch videos offline on mobile in select countries & regions |url=https://support.google.com/youtube/answer/6141269 |url-status=live |access-date=20 Apr 2025 |website=YouTube Help}}</ref> This creates confusion and problems, as users may want to download videos in anticipation of a period without internet access.

===Ineffectiveness of audio and video DRM===
It is nearly impossible to prevent copying of non-interactive content such as audio and video once it is distributed to the consumer.

Macrovision DRM can be defeated using a widely available time base corrector,<ref>{{Cite web |title=Bought this box back in the early 90s to eliminate Macrovision copy guard on tapes - cost $49.95 back then. Decided to see if it still works by recording my Red Label Star Wars set to DVD. Still working it’s magic! |url=https://old.reddit.com/r/VHS/comments/so4xs5/bought_this_box_back_in_the_early_90s_to/ |url-status=live |access-date=20 Apr 2025 |website=Old Reddit}}</ref> which strips out the signal that triggers the AGC on VCRs or Macrovision compliant devices.

Many HDMI splitters<ref>{{Cite web |title=Bypassing HDCP in 2024 |url=https://old.reddit.com/r/PS3/comments/19dohrh/bypassing_hdcp_in_2024/lbtqiky/ |url-status=live |access-date=20 Apr 2025 |website=Old Reddit}}</ref> and capture cards<ref>{{Cite web |title=I bought a $40 capture card off Amazon and it seems to have hdcp bypass because my PS3 works directly with it. |url=https://old.reddit.com/r/PS3/comments/19dohrh/bypassing_hdcp_in_2024/kj7cu60/ |url-status=live |access-date=20 Apr 2025 |website=Old Reddit}}
</ref> are capable of decrypting HDCP and copying the video stream. As long as at least one bypass exists at the HDCP level, all streaming content can be trivially ripped.

Audio DRM is trivial to bypass, as the audio must be decrypted into a plain analog signal in order to drive physical speakers or headphones.

===DRM degradation===
The development of some forms of DRM, such as [[wikipedia:Games_for_Windows_–_Live|Games For Windows Live]], are reliant on special processes within some operating systems that end up becoming unsupported or deprecated as time goes on. Legacy [[SecuROM]]-protected titles (released roughly between 1998 and 2005) are notoriously known for not running on operating systems newer than Windows XP<ref>https://www.lucadamico.dev/papers/drms/securom/ArabianNights.pdf</ref><ref>{{Cite web |last=@haggar |date=15 Oct 2006 |title=Unpacking SecuROM 4.xx |url=http://www.reversing.be/article.php?story=20061015153108847 |url-status=live |archive-url=https://web.archive.org/web/20220226230919/http://www.reversing.be/article.php?story=20061015153108847 |archive-date=26 Feb 2022 |access-date=20 Apr 2025 |website=www.reversing.be}}</ref>. Customers must spend an extensive amount of time circumventing the DRM (or using more illicit methods) just to play content they legitimately purchased.<ref>{{Cite web |last=Baggs |first=Nathan |date=16 Jan 2025 |title=Hacking This Terrible DRM |url=https://www.youtube.com/watch?v=vjkqI7dBDVg |url-status=live |access-date=20 Apr 2025 |website=[[YouTube]]}}</ref>

This DRM degradation has the worst effects on physical licenses of products, as unlike a digital installation, if a physical copy of a game's DRM stops being supported by modern hardware, developers cannot simply distribute a patch to directly modify the code on a disc, and online patches cannot last forever.

===Always-online DRM===
Some DRM requires a constant internet connection. While this may make sense in something that inherently requires an internet connection such as a streaming service or multiplayer-only video game, this has also been employed in games with single-player content, rendering customers unable to use their purchase if they do not have an active internet connection.<ref>{{Cite web |last=Kain |first=Erik |date=17 May 2012 |title='Diablo III' Fans Should Stay Angry About Always-Online DRM |url=https://www.forbes.com/sites/erikkain/2012/05/17/diablo-iii-fans-should-stay-angry-about-always-online-drm/ |url-status=live |access-date=20 Apr 2025 |website=Forbes}}</ref> Conversely, if operations for these services are shut down, user, even those with legitimate copies of software and internet access, cannot run their games without resorting to hacking them first.<ref>{{Cite web |last=Vitor |first=João |date=12 Jul 2024 |title=Rewriting completely the GameSpy support from 2000 to 2004 using Reverse Engineering on EA and Bungie Games |url=https://keowu.re/posts/Rewriting-completely-the-GameSpy-support-from-2000-to-2004-using-Reverse-Engineering-on-EA-and-Bungie-Games/ |url-status=live |access-date=20 Apr 2025 |website=Keowu Blog's}}</ref><ref>{{Cite web |last=Burns |first=Chris |date=4 Apr 2014 |title=GameSpy Shuts Down May 31: Will Your Game Be Affected? |url=https://www.slashgear.com/gamespy-shuts-down-may-31-will-your-game-be-affected-04323788/ |url-status=live |access-date=20 Apr 2025 |website=SlashGear}}</ref> [[Ubisoft]] has historically been known for server shutdowns and transfers cutting off access to games for many players.<ref>http://pc.gamespy.com/articles/121/1218211p1.html

[https://web.archive.org/web/20250000000000*/http://pc.gamespy.com/articles/121/1218211p1.html Archive]</ref><ref>{{Cite web |last=Sharkey |first=Mike |date=8 Feb 2012 |title=Ubisoft DRM Locks Out Paying Customers |url=http://pc.gamespy.com/articles/121/1218211p1.html |url-status=live |access-date=20 Apr 2025 |website=GameSpy}}</ref> Encrypted [[ATSC 3.0]] channels cannot be tuned to without a persistent internet connection.<ref>{{Cite web |last=Seidman |first=Lon |date=3 Sep 2023 |title=The ADTH Nextgen TV Box Shows Us Just How Bad ATSC 3.0 Encryption Will Be.. |url=https://blog.lon.tv/2023/09/03/the-adth-nextgen-tv-box-shows-us-just-how-bad-atsc-3-0-encrpytion-will-be/ |url-status=live |access-date=20 Apr 2025 |website=Lon.tv}}</ref>

==DRM present elsewhere==

===Printer Ink===
''See also: [[HP Dynamic Security]]''

Companies such as [[HP]] only allow printers to only use ink sold by the same brand. There are a number of DRM systems employed by different companies to this end, an example of which is HP Dynamic Security, which has caught controversy during recent years. Similarly, [[Dymo]] engages in this practice with their paper products using RFID tags.

===Air Filters===
''See also: [[Molekule threatens to remotely shut down devices used with third party air filters]]''

Some companies, namely Molekule and [[Xiaomi]], use NFC-based DRM systems to ensure that replacement air filters which are inserted in air purifying devices are made by the brand. Molekule additionally threatened to permanently shut down any devices which used third-party filters, essentially [[Device bricking|bricking]] them.

===Water Filters===
''See also: [[GE Refrigerator water filter DRM]]''

Certain models of refrigerators manufactured by General Electric contained DRM to prevent customers from purchasing generic water fikters and instead forcing their own water filters which are more expensive.

==Further reading==
*[[Automotive digital restrictions management]]

==References==
<references />
[[Category:Digital rights management]]

Digital rights management

2025-11-24T09:15:25Z

Agent47:

[[Category:Anti-consumer practices]]
[[Category:Common terms]]

[[wikipedia:Digital_rights_management|'''Digital rights management''']] (DRM), alternatively known as '''digital restrictions management'''<ref>{{Cite web |last=Stallman |first=Richard |title=Opposing Digital Rights Mismanagement |url=https://www.gnu.org/philosophy/opposing-drm.en.html |archive-url=https://archive.is/XwqaH |archive-date=2023-05-02}}</ref>, broadly refers to any kind of access control technology that is used to deliberately restrict the usage of media content or devices after the sale. It is typically used by a seller to prevent unauthorized distribution or replication of their product. Implementations of DRM can range from very simple (such as a basic disc check) to extremely complex executable binary obfuscation (such as Denuvo).

<blockquote>DRM creates a damaged good; it prevents you from doing what would be possible without it. – Defective by Design<ref>https://www.defectivebydesign.org/what_is_drm</ref></blockquote>

==DRM in video content==

Attempting to prevent the copying of video content is one of the most common and long-standing uses of DRM. The idea of using copy obstruction on video content predates the term "DRM", one early example being the "Automatic Gain Control" requirement in VCRs used to enforce the "Macrovision" copy-protection scheme.<ref>[https://www.law.cornell.edu/uscode/text/17/1201#k_1_A 17 U.S. Code § 1201 - Circumvention of copyright protection systems, K.1.A.i]</ref><ref>[https://cs.stanford.edu/people/eroberts/courses/cs181/projects/1999-00/dmca-2k/macrovision.html Macrovision Demystified], Stanford CS181. </ref> This requirement resulted in VCRs and compliant analog to DV capture cards not being able to record commercial VHS tapes{{citation needed}}.

From 1996, DVDs began to feature the "Content Scramble System" (CSS), an encryption based DRM. CSS was successfully circumvented as early as 1999, less than five years after its introduction, partly due to the limited length of the 40-bit encryption key, which was used to comply with US government export regulations of the time.<ref>http://www.cs.cmu.edu/~dst/DeCSS/FrankStevenson/mail1.txt</ref><ref>[https://web.archive.org/web/20000302000206/http://www.dvd-copy.com/news/cryptanalysis_of_contents_scrambling_system.htm "Cryptanalysis of Contents Scrambling System", Frank A. Stevenson, archived from dvd-copy.com]</ref> Following this, DVDs as well as HD-DVDs and Blu-Rays would implement other types of DRM, one of them being the "Advanced Access Content System".<ref>{{Cite web |title=Advanced Access Content System (AACS) |url=http://www.aacsla.com/specifications/specs091/AACS_Spec_Common_0.91.pdf |url-status=dead |archive-url=https://web.archive.org/web/20070302130221/http://www.aacsla.com/specifications/specs091/AACS_Spec_Common_0.91.pdf |archive-date=2 Mar 2007 |access-date=20 Apr 2025}}
</ref> When the AACS key was similarly extracted, the AACS Licensing Administrator began issuing cease-and-desist letters to websites where the key was posted.<ref>{{Cite web |date=17 Apr 2007 |title=AACS licensor complains of posted key |url=https://lumendatabase.org/notices/21725 |url-status=live |access-date=20 Apr 2025 |website=Lumen}}</ref> Another form of Blu-Ray DRM, [[Cinavia]], uses a form of audio watermarking that makes certain releases unplayable in devices that are not equipped to recognize it, a notable example being Sony's Playstation 3.<ref>{{Cite web |last=Ganesh |first=T. S. |date=21 Mar 2012 |title=Cinavia DRM: How I Learned to Stop Worrying and Love Blu-ray’s Self-Destruction |url=https://www.anandtech.com/show/5693/cinavia-drm-how-i-learned-to-stop-worrying-and-love-blurays-selfdestruction/2 |url-status=live |access-date=20 Apr 2025 |website=AnandTech}}</ref>

In the attempt of preventing video ripping via a capture card, modern displays, optical disc players, and computers use the [[wikipedia:High-bandwidth_Digital_Content_Protection|High-Definition Content Protection]] system to encrypt display signals.<ref>{{Cite web |title=About DCP |url=https://www.digital-cp.com/about_dcp |url-status=live |access-date=20 Apr 2025 |website=www.digital-cp.com}}</ref> For example, [[Netflix stream-quality controversy|Netflix will refuse]] to stream content at the full resolution advertised for the plan if the user is not streaming through an HDCP compliant video card and display.

For terrestrial over-the-air broadcast, in 2023 [[ATSC 3.0]] pilot stations across the United States started to encrypt their signals,<ref>{{Cite web |last=Seidman |first=Lon |date=15 May 2023 |title=Broadcasters Roll Out Restrictive DRM Encryption on ATSC 3.0 Broadcasts |url=https://blog.lon.tv/2023/05/15/broadcasters-roll-out-restrictive-drm-encryption-on-atsc-3-0-broadcasts/ |url-status=live |access-date=20 Apr 2025 |website=Lon.tv}}</ref> leaving those that bought ATSC 3.0 tuners that could not decrypt broadcasts unable to watch the newly encrypted channels. Those tuners that were later certified by the A3SA authority to decrypt signals also had potential restrictions placed as part of the DRM scheme, such as blocking recordings and remote tuner access.<ref>{{Cite web |last=Newman |first=Jared |date=28 Jul 2023 |title=NextGen TV’s DRM puts future of the over-the-air DVR in doubt |url=https://www.techhive.com/article/2009693/nextgen-tv-drm-puts-future-of-the-over-the-air-dvr-in-doubt.html |url-status=live |access-date=20 Apr 2025 |website=TechHive}}</ref>

==DRM in audio content==
Another place DRMs were used in was audio content, which was rarely implemented due to audio's analog nature (compared to video and software), making it questionable whether it could effectively block data replication. The most notable application of audio DRM was [[wikipedia:MediaMax|MediaMax]], which essentially functioned as malware to prevent users from simply playing these audio discs on Windows and macOS. There was also the less-notable [[wikipedia:Extended_Copy_Protection|Extended Copy Protection]] (XCP) DRM, however it did leave [[Sony]] in hot water<ref>{{Cite web |title=Sony BMG copy protection rootkit scandal |url=https://en.wikipedia.org/wiki/Sony_BMG_copy_protection_rootkit_scandal |url-status=live |access-date=20 Apr 2025 |website=Wikipedia}}</ref>, dubbing this form of DRM also as the Sony Rootkit.

==DRM in software==
Most discussions about DRM often associate its use with some form of software restriction, from the simple product key, to the infamous [[Denuvo]] DRM. Historically, DRM started off with simpler physical techniques, such as decoder wheels and [[wikipedia:Lenslok|LensLok]]. The effectiveness of these systems varied, and many cracking groups simply found ways around them, especially since second-hand copies of software that used these primitive forms of DRM could easily become lost, damaged, or worse, fail to function with certain hardware.<ref>{{Cite web |last=Whitehead |first=Ben |date=15 Apr 2010 |title=Banging the DRM |url=https://www.eurogamer.net/banging-the-drm-article?page=2 |url-status=live |access-date=20 Apr 2025 |website=EuroGamer}}</ref> This has essentially sparked a game of cat and mouse that continues to fester, especially for the gaming community, to this day.

==Consumer rights issues with DRM==
DRM, by definition, is designed to make content less compatible with devices. This means there is a higher likelihood of software or hardware refusing to play content due to buggy or overly restrictive DRM. For example, with the aforementioned Netflix HDCP requirement, it is not enough for the display you intend to watch the content on to support HDCP—all monitors connected to the system must support it.<ref>{{Cite web |title=Netflix requires all monitors to be HDCP 2.2. How can I get around this? |url=https://old.reddit.com/r/pcmasterrace/comments/1avkwtb/netflix_requires_all_monitors_to_be_hdcp_22_how/ |url-status=live |access-date=20 Apr 2025 |website=Old Reddit}}</ref><ref>{{Cite web |title=How do I get Netflix working at 4k on my second monitor? |url=https://old.reddit.com/r/netflix/comments/mam2l9/how_do_i_get_netflix_working_at_4k_on_my_second/ |url-status=live |access-date=20 Apr 2025 |website=Old Reddit}}</ref><ref>{{Cite web |title=How to use Netflix on your Windows computer or tablet |url=https://help.netflix.com/en/node/23931 |url-status=live |access-date=20 Apr 2025 |website=Netflix Help Center}}</ref> This means that on PCs with multi-monitor setup PC, older but fully functional monitors cannot be used as secondary screens without violating Netflix’s DRM restrictions.

Such requirements are not always clearly disclosed. When they are, they are often buried in the Terms of Service or, in Netflix's case, require navigating through multiple FAQ pages. Furthermore, some content may surreptitiously install DRM without the knowledge or consent of the user, such as in the Sony Rootkit scandal.<ref>{{Cite web |date=31 Oct 2005 |title=Sony, Rootkits and Digital Rights Management Gone Too Far |url=http://blogs.technet.com/b/markrussinovich/archive/2005/10/31/sony-rootkits-and-digital-rights-management-gone-too-far.aspx |url-status=dead |archive-url=https://web.archive.org/web/20150317040653/http://blogs.technet.com/b/markrussinovich/archive/2005/10/31/sony-rootkits-and-digital-rights-management-gone-too-far.aspx |archive-date=17 Mar 2015 |access-date=20 Apr 2025 |website=Mark Russinovich's Blog}}</ref> Such software may contain exploits that can compromise the security of the user's PC.<ref>{{Cite web |last=Krebs |first=Brian |date=10 Nov 2005 |title=Virus Writers Exploit Sony Anti-Piracy Software |url=http://blog.washingtonpost.com/securityfix/2005/11/virus_writers_exploit_sony_ant.html |url-status=dead |archive-url=https://web.archive.org/web/20061116191907/http://blog.washingtonpost.com/securityfix/2005/11/virus_writers_exploit_sony_ant.html |archive-date=16 Nov 2006 |access-date=20 Apr 2025 |website=Washington Post}}</ref>

DRM in video games has frequently been implemented in an intrusive manner, hurting load times and performance.<ref>{{Cite web |last=Kessler |first=Ana |date=25 May 2023 |title=Testing Reveals Games with Denuvo Launch Up to Four Times Slower |url=https://80.lv/articles/testing-reveals-games-with-denuvo-launch-up-to-four-times-slower/ |url-status=live |access-date=20 Apr 2025 |website=80.lv}}</ref> This behavior has been more a result of negligent usage of the DRM rather than deliberate malicious intent.

DRM failures can also come as a surprise. For example, with a YouTube Premium subscription, you can "Download videos to watch offline", but such videos are only available for 48 hours without an internet connection.<ref>{{Cite web |title=Watch videos offline on mobile in select countries & regions |url=https://support.google.com/youtube/answer/6141269 |url-status=live |access-date=20 Apr 2025 |website=YouTube Help}}</ref> This creates confusion and problems, as users may want to download videos in anticipation of a period without internet access.

===Ineffectiveness of audio and video DRM===
It is nearly impossible to prevent copying of non-interactive content such as audio and video once it is distributed to the consumer.

Macrovision DRM can be defeated using a widely available time base corrector,<ref>{{Cite web |title=Bought this box back in the early 90s to eliminate Macrovision copy guard on tapes - cost $49.95 back then. Decided to see if it still works by recording my Red Label Star Wars set to DVD. Still working it’s magic! |url=https://old.reddit.com/r/VHS/comments/so4xs5/bought_this_box_back_in_the_early_90s_to/ |url-status=live |access-date=20 Apr 2025 |website=Old Reddit}}</ref> which strips out the signal that triggers the AGC on VCRs or Macrovision compliant devices.

Many HDMI splitters<ref>{{Cite web |title=Bypassing HDCP in 2024 |url=https://old.reddit.com/r/PS3/comments/19dohrh/bypassing_hdcp_in_2024/lbtqiky/ |url-status=live |access-date=20 Apr 2025 |website=Old Reddit}}</ref> and capture cards<ref>{{Cite web |title=I bought a $40 capture card off Amazon and it seems to have hdcp bypass because my PS3 works directly with it. |url=https://old.reddit.com/r/PS3/comments/19dohrh/bypassing_hdcp_in_2024/kj7cu60/ |url-status=live |access-date=20 Apr 2025 |website=Old Reddit}}
</ref> are capable of decrypting HDCP and copying the video stream. As long as at least one bypass exists at the HDCP level, all streaming content can be trivially ripped.

Audio DRM is trivial to bypass, as the audio must be decrypted into a plain analog signal in order to drive physical speakers or headphones.

===DRM degradation===
The development of some forms of DRM, such as [[wikipedia:Games_for_Windows_–_Live|Games For Windows Live]], are reliant on special processes within some operating systems that end up becoming unsupported or deprecated as time goes on. Legacy [[SecuROM]]-protected titles (released roughly between 1998 and 2005) are notoriously known for not running on operating systems newer than Windows XP<ref>https://www.lucadamico.dev/papers/drms/securom/ArabianNights.pdf</ref><ref>{{Cite web |last=@haggar |date=15 Oct 2006 |title=Unpacking SecuROM 4.xx |url=http://www.reversing.be/article.php?story=20061015153108847 |url-status=live |archive-url=https://web.archive.org/web/20220226230919/http://www.reversing.be/article.php?story=20061015153108847 |archive-date=26 Feb 2022 |access-date=20 Apr 2025 |website=www.reversing.be}}</ref>. Customers must spend an extensive amount of time circumventing the DRM (or using more illicit methods) just to play content they legitimately purchased.<ref>{{Cite web |last=Baggs |first=Nathan |date=16 Jan 2025 |title=Hacking This Terrible DRM |url=https://www.youtube.com/watch?v=vjkqI7dBDVg |url-status=live |access-date=20 Apr 2025 |website=[[YouTube]]}}</ref>

This DRM degradation has the worst effects on physical licenses of products, as unlike a digital installation, if a physical copy of a game's DRM stops being supported by modern hardware, developers cannot simply distribute a patch to directly modify the code on a disc, and online patches cannot last forever.

===Always-online DRM===
Some DRM requires a constant internet connection. While this may make sense in something that inherently requires an internet connection such as a streaming service or multiplayer-only video game, this has also been employed in games with single-player content, rendering customers unable to use their purchase if they do not have an active internet connection.<ref>{{Cite web |last=Kain |first=Erik |date=17 May 2012 |title='Diablo III' Fans Should Stay Angry About Always-Online DRM |url=https://www.forbes.com/sites/erikkain/2012/05/17/diablo-iii-fans-should-stay-angry-about-always-online-drm/ |url-status=live |access-date=20 Apr 2025 |website=Forbes}}</ref> Conversely, if operations for these services are shut down, user, even those with legitimate copies of software and internet access, cannot run their games without resorting to hacking them first.<ref>{{Cite web |last=Vitor |first=João |date=12 Jul 2024 |title=Rewriting completely the GameSpy support from 2000 to 2004 using Reverse Engineering on EA and Bungie Games |url=https://keowu.re/posts/Rewriting-completely-the-GameSpy-support-from-2000-to-2004-using-Reverse-Engineering-on-EA-and-Bungie-Games/ |url-status=live |access-date=20 Apr 2025 |website=Keowu Blog's}}</ref><ref>{{Cite web |last=Burns |first=Chris |date=4 Apr 2014 |title=GameSpy Shuts Down May 31: Will Your Game Be Affected? |url=https://www.slashgear.com/gamespy-shuts-down-may-31-will-your-game-be-affected-04323788/ |url-status=live |access-date=20 Apr 2025 |website=SlashGear}}</ref> [[Ubisoft]] has historically been known for server shutdowns and transfers cutting off access to games for many players.<ref>http://pc.gamespy.com/articles/121/1218211p1.html

[https://web.archive.org/web/20250000000000*/http://pc.gamespy.com/articles/121/1218211p1.html Archive]</ref><ref>{{Cite web |last=Sharkey |first=Mike |date=8 Feb 2012 |title=Ubisoft DRM Locks Out Paying Customers |url=http://pc.gamespy.com/articles/121/1218211p1.html |url-status=live |access-date=20 Apr 2025 |website=GameSpy}}</ref> Encrypted [[ATSC 3.0]] channels cannot be tuned to without a persistent internet connection.<ref>{{Cite web |last=Seidman |first=Lon |date=3 Sep 2023 |title=The ADTH Nextgen TV Box Shows Us Just How Bad ATSC 3.0 Encryption Will Be.. |url=https://blog.lon.tv/2023/09/03/the-adth-nextgen-tv-box-shows-us-just-how-bad-atsc-3-0-encrpytion-will-be/ |url-status=live |access-date=20 Apr 2025 |website=Lon.tv}}</ref>

==DRM present elsewhere==

===Printer Ink===
''See also: [[HP Dynamic Security]]''

Companies such as [[HP]] only allow printers to only use ink sold by the same brand. There are a number of DRM systems employed by different companies to this end, an example of which is HP Dynamic Security, which has caught controversy during recent years. Similarly, [[Dymo]] engages in this practice with their paper products using RFID tags.

===Air Filters===
''See also: [[Molekule threatens to remotely shut down devices used with third party air filters]]''

Some companies, namely Molekule and [[Xiaomi]], use NFC-based DRM systems to ensure that replacement air filters which are inserted in air purifying devices are made by the brand. Molekule additionally threatened to permanently shut down any devices which used third-party filters, essentially [[Device bricking|bricking]] them.

===Water Filters===
''See also: [[GE Refrigerator water filter DRM]]''

Fridges manufactured by GE ([[General Electric]]

==Further reading==
*[[Automotive digital restrictions management]]

==References==
<references />
[[Category:Digital rights management]]