Mastercard has introduced a new crypto debit card enabling users to spend Bitcoin directly from self-custodial wallets. This innovation eliminates the need for third-party intermediaries, providing a more streamlined and secure transaction process. The card aims to enhance user control over their digital assets while maintaining the convenience of traditional debit card transactions. This development marks a significant step in integrating cryptocurrency into everyday financial activities, potentially broadening the adoption and usability of digital currencies in mainstream markets.