In the context of blockchain and web3, Mask refers to a decentralized identity protocol that allows users to manage their digital identity and personal data securely and privately.

Mask enables users to:

- Control their digital identity
- Manage personal data
- Securely authenticate and authorize
- Protect privacy
- Utilize decentralized applications (dApps)

Mask utilizes blockchain technology and zero-knowledge proofs to ensure secure and private management of digital identity and personal data.