Anage verification system, also known as anage gate, is any technical system that externally verifies a person's age. These systems are used primarily to restrict access to content classified, eithervoluntarily or by local laws, as being inappropriate for users under a specific age, such asalcohol,tobacco,gambling,video games with objectionable content,pornography, or to remain in compliance withinternet privacy laws that regulate the collection of personal information from minors, such asCOPPA in theUnited States.[1] Age verification systems have been criticized for privacy andcomputer security risks.[2]
Age verification substantially increased in 2023–2024, with the passage of theOnline Safety Act 2023 in theUK, a law inFrance,[3] laws in eight U.S. states includingTexas andUtah,[4] and proposals at the national level in the US,Canada,[5]Denmark,[6] and theEU.[7]
Online age verification is distinct from the mandatory online identity registration used in some countries withtechno-authoritarianism.[8]
The most basic form of age verification is to require a person to input theirdate of birth on a form. However, this depends on anhonor system that assumes the honesty of the end user. The person may, for instance, be a minor who fraudulently inserts a valid date that meets the age criteria, rather than their own. For this reason the system has been described as ineffective.[9][10]
Parental controls enableparents to applyinternet filters to restrict their children's access to content they deem inappropriate for their age.[11]
Age verification systems requiring people to providecredit card information depend on an assumption that the vast majority of credit card holders are adults, because U.S. credit card companies did not originally issue cards to minors.[10] Additionally, a minor may still attempt to obtain their parent's credit card information, or persuade ordefraud users into divulging theircredit card number to an individual to use for their own purposes, defeating the stated purpose of the system.[12][13]
In 2005,Salvatore LoCascio pleaded guilty to charges of credit card fraud; one of his schemes had involved using credit card-based age verification systems to charge users for "free" tours of adult entertainment websites.[14]
Aylo, a major operator of porn websites, operates an age verification provider known as AgeID. First introduced in Germany in 2015, it uses third-party providers to authenticate the user's age, and asingle sign-on model that allows the verified identity to be shared across any participating website.[15][16]
The Australian government has proposed counteringidentity fraud through the use of afacial recognition system that compares individuals with official identification photos.[17]
Facial age estimation usesmachine learning to estimate the user's age by analysing their facial features in aselfie while ensuring that they are a real person and not a photograph or wearing a mask by using aliveness test.
Zero-knowledge proofs verify a person's age without the person disclosing their identity, either to the receiver, such as a business, or the verifying entity, like a government that issues a passport.[18]
The adult-oriented video game franchiseLeisure Suit Larry presented players with trivia questions that, in the opinion of franchise creatorAl Lowe, a child would not know the answer to (such as, for example, "All politicians are: a. hard-working, b. honest, c. on the public payroll"), in order to launch the game (although this can be bypassed with a keyboard shortcut).[19]
Australia intended to implement requirements for age verification under theOnline Safety Act 2021. In August 2023,Minister for CommunicationsMichelle Rowland released a report by eSafety that recommended against such a scheme, finding that "at present, each type of age verification or age assurance technology comes with its own privacy, security, effectiveness or implementation issue", and suggesting that an industry code be adopted to promote the use ofcontent filtering software to parents.[20]
In May 2024, the federal government allocated A$6.5 million from the2024 Australian federal budget to a pilot age verification scheme meant to protect children from accessing pornography and other harmful digital content in response to a sharp rise in domestic violence nationally.[21][22]
On 10 September 2024,Prime MinisterAnthony Albanese and Minister for Communications Michelle Rowland confirmed that the federal government would introduce legislation to enforce a minimum age for access to social media and other relevant digital platforms. The federal government would also work with states and territorial governments to develop a uniform framework. Albanese said that the legislation was intended to safeguard the safety and mental and physical health of young people while Rowland said that the proposed legislation would holdbig tech to account for harmful online environments and social media addiction among children.[23] The minimum age is likely to be set between 14 and 16 years of age. The federal government's announcement followedSouth Australia's plan to restrict social media access to people aged 14 and above, and theCoalition's promise to restrict social media access to people aged 16 if it won the2025 Australian federal election.[24]
The federal government's moves to impose a social media age limit was supported byNew South Wales PremierChris Minns,South Australian PremierPeter Malinauskas,Victorian PremierJacinta Allan andQueensland PremierSteven Miles. The Coalition's communications spokesmanDavid Coleman said social media age verification should be limited to those aged 16 and above.[25] In response, theAustralian Association of Psychologists director Carly Dober described the Government's proposed social media age limit as a "bandaid response to a very complicated and deeply entrenched issue". She also said that the ban ignored the benefits that online spaces could offer to young people, especially those from marginalised communities.[25] Similar criticism was echoed by Daniel Angus, director of theQueensland University of Technology Digital Media Research Centre, and the Australian Internet regulator, theeSafety Commissioner, who expressed concern that a social media ban would exclude young people from "meaningful" digital engagement and access to critical support.[26]
On 7 November, Prime Minister Albanese confirmed that the government would introduce legislation in November to ban young people under the age of 16 from using social media. The proposed legislation would not include exemptions for young people who already have social media accounts or those with parental consent.[27] The children's advocacy group Australian Child Rights Taskforce criticised the proposed law as a "blunt instrument" and urged the Albanese government to instead impose safety standards on social media platforms. By contrast, the 36Months initiative has supported the social media age limit on the grounds that excessive social media usage was "rewiring young brains" and causing an "epidemic of mental illness".[28]
On 21 November, the Albanese government introduced theOnline Safety Amendment, legislation that would ban young people under the age of 16 from accessing social media and proposed fines of up to A$49.5 million (US$32 million) on social media platforms for systemic breaches. The proposed law would affectFacebook,Instagram,TikTok,X (formerly Twitter) andSnapchat. However, Albanese confirmed that children would still have access to messaging, online gaming, and health and education-related services including the youth mental health platformHeadspace,Google Classroom andYouTube. The oppositionLiberals intend to support the legislation while theAustralian Greens have sought more details on the proposed law.[29]
The proposed legislationBill S-210—which passed theSenate in 2023 and began committee review in theHouse of Commons in late-May 2024, would prohibit organizations from making "sexually explicit" material available on the internet for commercial purposes to users under the age of 18, unless an age verification system is implemented, or the content has a legitimate artistic, educational, or scientific purpose.[30][31][32] The bill has been criticized for privacy implications, not specifically specifying a required form of age verification, and freedom of expression concerns surrounding its scope—which can includesocial networking and online video services, and allow for blocking of entire websites to users in Canada if they do not comply with orders issued under the bill—even if the rest of the content is otherwise non-pornographic.[32][31]
On August 30, 2021, theState Press and Publication Administration issued the Notice of the State Press and Publication Administration on Further Strict Management to Effectively Prevent Minors from Being Addicted to Online Games, which stipulates that all online game enterprises may only provide online game services to minors for one hour from 20:00 to 21:00 daily on Fridays, Saturdays, Sundays and legal holidays, and may not provide online game services to minors in any form at other times.[33]
In Germany age verification systems are mandated by the "Jugendmedienschutz-Staatsvertrag" which was introduced in September 2002.[34] The institution in chargeCommission for the Protection of Minors in the Media (KJM) considers only systems equivalent to face-to-face verification as sufficient for age verification.[35]
With the passing of theDigital Economy Act 2017, theUnited Kingdom passed a law containing a legal mandate on the provision of age verification. Under the act, websites that publish pornography on a commercial basis would have been required to implement a "robust" age verification system.[36][37] TheBritish Board of Film Classification (BBFC) was charged with enforcing this legislation.[15][16][38] After a series of setbacks and public backlash, the planned scheme was eventually abandoned in 2019.[39]
While the UK government abandoned this legislation, age verification continues to be monitored and enforced by regulatory bodies including Ofcom[40] and the ICO.[41] Other standards are emerging for age assurance systems, such as PAS1296:2018.[42] The ISO standard for age assurance systems (PWI 7732) is also being developed by the Age Check Certificate Scheme, the Age Verification Providers’ Association, and other Conformity Assessment Bodies.[43]
In 2023, Parliament passed theOnline Safety Act 2023; as part of the mandatory duty of care to protect children, all service providers must use age verification or estimation to prevent children from accessing "primary priority content that is harmful to children", which includes pornographic images. The provisions took effect on 25 July 2025, and apply to all services that host such content, including social networks.[44][45][46][47][48]
Some websites of alcoholic beverage companies attempt to verify the age of visitors so that they can confirm they are at least the American legal drinking age of 21.[49]
In 2000, theChildren's Online Privacy Protection Act (COPPA) took effect at the federal level, resulting in some websites adding age verification for visitors under the age of 13, and some websites disallowing accounts for users under the age of 13. Companies such asYouTube andByteDance have received large fines from theFederal Trade Commission (FTC) for not complying with COPPA.
In 2022,Louisiana became the first state to require age verification for accessing adult websites. Usage of LA Wallet, the state's digital ID and mobile drivers license app, subsequently spiked, as LA Wallet allows for remote identification via MindGeek, the owner of many major porn sites.
In 2023,several states, including Arkansas[50] and Utah,[51] passedsocial media addiction bills requiring users ofsocial media platforms to be over the age of 18 or have parental consent, with these bills prescribing that age verification be used to enforce this requirement.[51][50] One such bill is theUtah Social Media Regulation Act, which is scheduled to take effect in 2024, and attempts to prevent minors from using social media from 10:30 PM to 6:30 AM.
In May 2023, a law passed in Utah requiring that pornography websites verify the ages of their visitors, although it has a clause that bars it from taking effect until five other states also implement similar measures.[52] A few days before the law passed, in order to protest the bill,Pornhub blocked their website from being viewed in Utah.[52] The trade groupFree Speech Coalition filed a lawsuit against the state of Utah, claiming the law violated theFirst Amendment. The lawsuit was dismissed by US District Court JudgeTed Stewart on August 1, 2023; however, the Free Speech Coalition stated they would appeal this ruling.[53][54]
In contrast, on August 31, 2023, US District JudgeDavid Ezra invalidated a Texas law passed in June mandating age verification and health warnings before accessing pornographic websites following a lawsuit from theFree Speech Coalition, and barred the state attorney general's office from enforcing the law on the grounds that it violates the right to free speech and is overly broad and vague. TheTexas Attorney General's office stated they would appeal the ruling.[55][56] The5th Circuit Court of Appeals overturned the injunction pending a full hearing.[57] The case eventually progressed to the Supreme Court,[58] whoruled 6–3 in favor of the age verification law, holding that it "only incidentally burdens the protected speech of adults."[59]
The sector is represented by theAge Verification Providers Association[60] which was founded in 2018 and had grown to have 27 members by 2023.[61]