Ring signatures have become a popular privacy technique in blockchain technology. A ring signature allows a user to sign a transaction on behalf of a group of users, making it impossible to determine which member of the group actually signed it. This creates a layer of anonymity for the sender of a transaction. Cryptocurrencies like Monero utilize ring signatures to enhance user privacy. The technology works by combining the signer's private key with multiple public keys from other users to form a "ring," obscuring the true signer's identity. As blockchain adoption grows, ring signatures offer a practical solution for those seeking greater privacy in their digital interactions.