Ring signatures are a type of digital signature that can be generated by any member of a group of users, but do not reveal which group member created it. This mechanism allows for anonymous signing, providing greater privacy. The algorithm combines multiple public keys and allows a signer to choose a ring of co-signers from which a public key is included in the signature without revealing which individual’s key was used. This technology is notably used in privacy-focused cryptocurrencies like Monero to obfuscate the identity of users.