Every time you create a new online account, you’re handing over personal data to a server you’ll never control. Since an average person can have hundreds of online accounts on different services, that adds up to a lot of data sitting in corporate databases.
Researchers at Harvard’s Applied Social Media Lab say that this system puts your privacy at risk and makes you more vulnerable to identity theft. Their solution to this problem is Keyring, an open-source identity wallet that stores your biometric data on your phone instead.
How does Keyring actually work?
Think of it as a privacy-first digital ID. Rather than exposing your full details to every service you use, Keyring lets you share only what’s strictly necessary.
Services like Tinder have already started exploring biometric identity checks to check if the users are real humans. It shows how massive the identity problem has become across platforms on the internet.
So, if you want to verify you’re an adult, Keyring will verify that without revealing your actual birthdate. Or maybe you need to get an email account verification done; Keyring can also do that for you without exposing your username.
You authenticate through biometric data like a fingerprint or face scan, which never leaves your device. You can also add verifiable credentials like a digital driver’s license or proof of employment.
The wallet was built in collaboration with the Linux Foundation’s Decentralized Trust Graph Working Group and is already being demonstrated on Bluesky.
Keyring also lets two people verify an in-person connection without routing anything through a platform like LinkedIn. Every verified connection contributes to a decentralized trust graph, a network where no central database holds your identity data, but everyone in your circle can confirm each other’s credentials.
What’s next for the Keyring wallet?
The biggest challenge isn’t technical. Institutions, governments, and corporations would need to issue and recognize verified credentials for Keyring to work at scale.
Right now, those entities have little incentive to participate because they currently profit from owning and monetizing your data. Researchers say a grassroots push for greater data agency may be the most realistic path forward.
Harvard is also actively looking for collaborators and test partners to help shape where the project goes next.