Using ZK Sessions to improve UX

The article proposes zkSessions, a private delegation method that lets a user's device grant a session key limited permissions and expiration without exposing the master key or the user's identity. It uses a robot assistant named Chappie acting for Bob as its running example, and it argues the approach can improve user experience for decentralized applications. The author notes that keys stored on a mobile device but needed in a laptop browser are usually handled either by exporting the keys, which is risky, or by QR code signing for each step, which is cumbersome. Under the proposed approach, a user creates one session and delegates session keys to the laptop with defined policies, so only one QR scan is needed per session.