Hm, I already have a smartphone with Google Authenticator App and NFC, why would I want to carry a ring? Having recently married and struggling a lot with the

Hm, I already have a smartphone with Google Authenticator App and NFC, why would I want to carry a ring? Having recently married and struggling a lot with the ring issue (basically lots of money for a useless piece of metal), the idea of a wedding ring with some badass electronic capabilities has crossed my mind, though.