Personnel access system with verification features utilizing near field communication (NFC… Grant US-9414234-B2 United States of America 09 Aug 2016
Communications system providing personnel access based upon near-field communication and… Grant US-9269207-B2 United States of America 23 Feb 2016
Security system providing temporary personnel access based upon near-field communication… Grant US-8912879-B2 United States of America 16 Dec 2014
Communications system providing personnel access based upon near-field communication and… Grant US-8682245-B2 United States of America 25 Mar 2014