Meet our anonymous facial age estimation technology

profile picture Yoti 5 min read
A person using Yoti's facial age estimation technology on a laptop.

We developed our facial age estimation technology to provide a secure and private way to prove your age, without sharing identity documents or personal details like name or date of birth. It’s fast, accurate and anonymous.

Here’s how our facial age estimation technology works, how it’s designed and why it’s one of the most privacy-friendly solutions available.

 

What is facial age estimation?

Facial age estimation is a safer and easier way to prove your age to access age-restricted goods, services and content. Completing a facial age estimation takes seconds – all you need to do is take a selfie. The moment your age is estimated, the selfie is deleted so your privacy is protected at all times.

Our technology has been trained to estimate age by looking at facial features in an image. To the technology, the selfie image is simply a pattern of pixels, and the pixels are numbers. Our facial age estimation technology has been trained to spot patterns in numbers, so it learns ‘this pattern is what 16 year olds usually look like’. Once your age has been estimated, the selfie image is deleted.

Image showing how facial age estimation works: 1) Face is detected and reduced to pixels then numbers for AI to understand; 2) numbers are computed by a neural network that has been trained to recognise age by looking at millions of images of faces; 3) the AI finds a pattern in the numbers and produces an age. Note at the bottom to be clear that no images are stored during the estimation process, that the technology is scalable to tens of millions of checks a day, and that the process is instantaneous.

At the same time, we perform a liveness check. This ensures that it’s a real person taking the selfie and not someone trying to spoof the technology using a mask, photo, video, bot or injection attack. Liveness checks are becoming increasingly important given the rise in deepfake scams.

 

Anonymous by Design

Yoti’s facial age estimation technology allows you to remain fully anonymous. The system is designed from the ground up to respect your privacy.

In practice, that means:

  • No personal data is stored: Facial age estimation never requires or stores any names, personal details or identifiers. Your selfie is used only to estimate your age. Once the age result is delivered to the platform or business, we delete the image immediately. We do not keep your image or any other data that could identify you.
  • No user accounts are needed: We do not ask you to sign up, create an account or provide any contact information. You simply show your face to the camera (either on your device or in a kiosk) and the technology estimates your age in about one second. That’s it.
  • It’s not facial recognition: It’s important to clarify that facial age estimation is not facial recognition technology. We neither store images nor retain any personal data once the age estimation process is complete. The system does not compare your face to any database of faces. Facial age estimation does not know who you are and never tries to find out.

 

Proven accuracy

Of course, privacy is only part of the equation. Facial age estimation also needs to be accurate and fair. Our facial age estimation works fairly across all genders and skin tones. We also work continuously to identify and reduce any bias in our system. 

Our technology has been independently tested by the National Institute of Standards and Technology (NIST), the global benchmarking agency for facial age estimation. They concluded that our system is an effective, fair and inclusive way to check age and age ranges, such as over 18, with an appropriate threshold. They also said that Yoti is the most accurate facial age estimation provider for 13-16 year olds, a key age group that regulators are most concerned with to help keep children safe online.

We also regularly publish performance data and accuracy levels in our white papers.

 

Transparency and accountability

Furthermore, the technology has undergone rigorous testing and validation. It meets the requirements of the UK Age Check Certification Scheme (ACCS) and has been positively rated by Germany’s Commission for the Protection of Minors in the Media (KJM) and the German Association for Voluntary Self-Regulation of Digital Media service providers (FSM) for use in protecting young people online.

We take our ethical responsibilities very seriously when developing our technology. Our facial age estimation technology complies with both EU GDPR and our own ethical approach to user data and privacy. Our approach to facial age estimation is also externally reviewed as part of our SOC2 / PAS1296 assessment under control PAS-2.

 

Who uses facial age estimation?

Our anonymous facial age estimation technology is already being used across multiple industries for privacy-preserving age checks. When offered the choice, 92% of people choose to use facial age estimation over other age checking methods.

We’ve completed hundreds of millions of age checks for leading brands across multiple sectors to help them strengthen age checks and meet regulatory requirements. They include Instagram, Facebook, OnlyFans, Epic Games, Sony, Yubo, Lockwood Publishing and John Lewis. 

 

Facial age estimation balances accuracy, privacy and speed

As age assurance becomes a more prominent requirement across digital services, we’re proud to offer a solution that doesn’t force you to sacrifice your privacy. Our facial age estimation technology is fast, reliable and critically, anonymous by design.

We believe it’s possible to strike the right balance between protecting users and respecting your right to privacy.

You can learn more about our facial age estimation in our latest white paper.

Keep reading

A simple image displaying the Yoti logo on the left-hand side and '2025' on the right-hand side.

A look back at 2025

As we close out 2025, we’ve been reflecting on a year that marked a clear shift for the age and identity industry. This was the year digital IDs moved further into everyday use. The year age regulation accelerated globally. The year trust proved to be a true differentiator, and one we’ve worked hard to build and maintain. Behind the scenes for Yoti, it was also a year of significant progress, including reaching profitability and expanding our role in the identity ecosystem. Here’s our look back on the moments and learnings that shaped our 2025.   Digital IDs moved closer

6 min read
An image showing a person's hands using a tablet device. Several dots connected by dashed lines illustrate the concept of connections or a network.

Yoti age tokens, passkeys and privacy: Reflections on 6 years of scaling privacy-preserving age assurance

Over recent months, there’s been growing buzz in the industry about privacy-preserving ways to prove age online. Device-bound age tokens, passkey-binding and cryptographic signals that confirm someone is “over 18” without sharing any identity details are increasingly being discussed as if they’re brand new ideas. It’s great to see this conversation picking up. The online world needs ways for people to prove their age in seconds, with minimal data and maximum privacy. But it’s worth adding a bit of context.   Yoti age tokens have been around since 2019 We introduced Yoti age tokens back in 2019. These are

6 min read
An image of a girl lying on a bed and using a mobile phone.

Keep calm and carry on - what to expect ahead of Australia's age checks for social media

We’ve been talking to a number of media outlets ahead of Australia’s upcoming social media ban for under 16’s – set to kick in on 10th December – and thought it was worth sharing our insights more widely. After all, there’s plenty of speculation about what will actually happen: Will systems cope? Will there be issues accessing sites? Will everything grind to a halt? After supporting a number of countries across the world as they’ve rolled out age assurance measures (including the UK Online Safety Act’s launch in July this year), we can say with confidence that the infrastructure

7 min read