Comment No NFC is not owned by NXP (Score 0) 112
NXP do own Mifaire technology that is what is used in most door opening scenarii.
But, NFC (aka ISO/IEC 1809 & ECMA-340 ) are standardized Open (read Open Standard) solution.
Although most chipset do support both, on lot of phones (say Samsung for instance), only NFC is enabled because of royalties disputes between the manufacturer and NXP. Most Mifaire standards are known for security issues. But you know, most people still use pin-based lock which most of them can be oppenned in a bunch of minutes with innexpensive tools. So ...
Anyway, in all the application I've designed that required NFC, our customer decided to either drop the feature (because iOS lacked NFC support) or simply dropped the iOS application. In most cases it was a casus belli that ends the iOS device predominancy at the corp.