Google began testing alternatives to third-party cookies.

Google Chrome announced earlier this year that it would phase out supporting third-party cookies for two years. Google says it wants to develop alternative tools to “maintain ad-supported web” to “make third-party cookies obsolete” within two years. Now Google has taken a big step toward steaming a project that has begun testing “trust tokens” with developers, with plans to start field testing soon.

Google began testing alternatives to third-party cookies.

The technical specifications and APIs for the trust token are published on GitHub. Trust tokens take advantage of blind signatures and zero-knowledge proofs, have shorter lifetimes, are less durable than cookies, and provide very limited identifyal data. The specification is still in the early stages of implementation.