The OpenID Foundation joined participants from across the industry at the 13th ISO mDL interoperability test event in La Ciotat, France last week, taking its conformance test suite to one of the most significant gatherings of digital identity implementers in the international standards calendar. The two-day event, held 28–29 May, focused on interoperability testing against ISO/IEC 18013-5 and ISO/IEC TS 18013-7 , including the draft appendices that reference the OpenID for Verifiable Presentatio