[stavros]

In case I forget my wallet and my phone! I'd quite like a credit-card NFC sticker for my phone, though, that'd be a nice backup.

[wkat4242]

The big benefit though is that you have additional authentication on the phone or watch.

I love having it on my watch, it's just so useful. Especially because I live in a city full of pickpockets. No need to take my phone out.