Joseph Heenan, CTO at Authlete and leader at the OpenID Foundation, dives into the development of the Financial-grade API (FAPI), a security upgrade for OAuth aimed at the financial sector. He explores its journey from financial applications to broader high-security uses. Alongside Gregor Vand, they discuss the rise of open banking in the UK, the need for security in financial APIs, and the impact of FAPI on user experiences across industries. They also highlight how Authlete simplifies FAPI implementation, even extending its benefits to healthcare data sharing.