Google has introduced a new privacy-first feature to its Wallet app, allowing users to verify their age without exposing personal data. Powered by zero-knowledge proof (ZKP) technology, the system ensures users can access age-restricted services while keeping their birthdate and identity private.

The feature is already in use by Bumble, the popular dating app, which now accepts digital IDs issued through Google Wallet. ZKPs handle the age-check process, enabling compliance without compromising user privacy.

Zero-knowledge proofs are cryptographic tools that let someone confirm a piece of information—such as being over 18—without disclosing how that fact is known. The system uses encrypted logic run on a blockchain, producing a proof that third parties can validate securely through public keys. Unlike traditional ID checks, which may involve uploading driver’s licenses or passports, this method minimizes the risk of data exposure.

“This solution responds to the growing need for secure, privacy-respecting age verification across platforms,” Google stated. “We believe users shouldn’t have to sacrifice personal privacy to prove eligibility.”

The functionality is now active within Google Wallet and is accessible to developers through the Digital Credential API, enabling integration across mobile and web platforms.

The development marks a significant real-world application for ZKP technology, which has long been considered promising but underutilized. Market signals may be turning—zero-knowledge tokens have seen a 1.7% uptick over the past 24 hours, according to CoinGecko—suggesting renewed investor interest as major players like Google enter the space.