Google has included zero-knowledge proof (ZKP) technology into its digital ID system, marking a major shift in how user data is protected during identity verification. This addition to Google Wallet will allow users to confirm their age and identity without sharing sensitive personal information.
The active feature will address rising concerns about data exposure in digital identification processes.
UK Gets First Rollout for Railcards, Other Uses Explored
The ZKP-enhanced digital ID system launches first in the United Kingdom. UK users now link digital IDs derived from their passports for identity verification across participating platforms.
Rail Delivery Group is one of the first partners to accept these credentials to verify age requirements when purchasing railcards. Google is also in discussions to expand the use of these IDs to other regulated areas, including alcohol purchases.
The technology enables age verification without revealing full identity details. This is performed through custom-built ZK systems developed using technology from Ligero, a startup focused on privacy platforms. Ligero is backed by blockchain-related investors such as Galaxy Ventures, Franklin Templeton, 1kx, Robot Ventures, and Digital Currency Group.
Expansion Across U.S. States
More states are adopting digital ID integration with Google Wallet in the United States. Arkansas, Montana, Puerto Rico, and West Virginia will allow residents to store official documents within the app. Meanwhile, Arizona, Georgia, Maryland, and New Mexico will enable their use in Department of Motor Vehicles (DMV) operations.
As the mandatory REAL ID usage deadline nears, Google has confirmed plans to support digital passport-based credentials for domestic flights. These credentials will be accepted at select authorized airports, allowing travelers to use their mobile devices for identity checks.
While it remains unclear how Google’s ZK system will interact with cryptocurrency applications, the company stated that its implementation will be open-sourced for other wallets and online services. Google has also partnered with platforms like Bumble to help with age verification using the ZK system, enabling users to confirm eligibility without revealing full birthdate information.
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