Found these as confirmation, based on Freak_NL's pointer; by design, NFC is used for a single purpose on iPhone 6 & 7 currently.

Will Apple support NFC tags in iOS 10 for the iPhone 7? :

https://gototags.com/blog/will-apple-finally-support-nfc-tag...

https://gototags.com/blog/apple-iphone-7-support-nfc-tags/