FIPS 201-2: Personal Identity Verification of Federal Employees and Contractors. NIST: New PIV credential can reside on mobile device, making it easier to authenticate services from mobile devices. Nearly 5 million PIV cards have been issued to federal workers and contractors in the U.S. and abroad. The standard also allows for a virtual contact interface, which uses near-field communications to establish radio contact between a PIV card and mobile device that are in close proximity.”]
Source: https://www.cuinfosecurity.com/latest-piv-standards-integrate-mobility-a-6084