In a blind signature, some portion of the contents of the sender’s message are hidden, leaving the receiver to sign the transaction based on trust. It’s called blind signing because the recipient has to sign at least partly concealed information. Blind signatures are important in situations where the smart contract details in the code cannot be taken out and made plainly clear to the recipient, and sometimes important information about the sender may be obscured.
Blind signing introduces risk in the verification of transactions, but people do it most of the time without noticing. This is mainly because they feel comfortable basing their decision to sign on some other indicator than a detailed knowledge of the specific contents.
Non-fungible token (NFT) users have fallen victim to scammers who posed as legitimate service representatives from reputable NFT marketplaces. The victims were asked to approve transactions under the guise of letting the representative assist them, when in reality, their assets were being stolen. Blind signing is slowly becoming an industry norm, and this could pose a serious security risk in the future.