Google Wallet Introduces Zero-Knowledge Proof Integration for Enhanced Privacy in Identity Verification

Google Corporation has announced the integration of zero-knowledge proof (ZKP) technology into its e-wallet service, Google Wallet. This initiative aims to enable identity verification while ensuring user privacy.

The pilot launch is set to take place in the United Kingdom, with plans to expand the system to the United States and other countries thereafter.

According to company representatives, the ZKP technology will allow users to verify that they meet a specific age requirement without revealing their identity or date of birth.

Google Wallet provides the functionality to store and utilize digital versions of various cards and documents, including those used in conjunction with Google Pay.

The company has developed its own ZKP system based on technologies from Ligero, a startup founded in 2018, which has backing from prominent investors like Galaxy Ventures, 1kx, Franklin Templeton, Robot Ventures, and Digital Currency Group.

It remains unclear how deeply Google Wallet will integrate with the cryptocurrency industry. However, the company’s ZKP solutions will be open-source and available for third-party developers to implement.

Google has also announced that the digital ID in Wallet can be used both online and offline, potentially serving as an alternative to a passport for domestic flights within the United States. Other applications include account recovery for Amazon, access to healthcare services through CVS and Epic’s MyChart, and profile verification on Uber.

Previously, zero-knowledge proofs were largely seen as an academic concept until crypto projects like Zcash applied them for practical uses related to scalability and privacy. Currently, such solutions form the foundation of ZK-Rollups, utilized by platforms like Starknet and ZKsync, as well as privacy mechanisms such as zk-SNARKs and zk-STARKs.

Notably, Ethereum co-founder Vitalik Buterin has stated that privacy is the cornerstone of freedom.