Sometimes you just want to do something as ordinary as getting a card, opening an account, or renting a car. You understand that institutions need to verify your identity, and these rules make sense naturally. It's just that the discomfort never quite goes away: why should sensitive biometric information like personal ID, photos, fingerprints, and even iris scans be fully entrusted to a stranger's black-box system? You can't see how the data is stored, nor can you decide how it is used.

This issue has long existed in traditional finance, but in the Web3 era, it has become even more acute. On one hand, the DeFi ecosystem's demand for privacy protection is growing stronger; on the other hand, on-chain identity verification and compliance requirements are constantly increasing. Finding a balance between protecting personal privacy and meeting necessary identity verification has become a practical challenge faced by everyone.