mobile banking with my watch

After camera (see the previous post) and before (smart) glass, the new device for mobile banking may be the smart watches. There are 2 kinds of smart watches : the first one with a SIM card, the second with connection to a smartphone.
The first one seams interesting for mobile banking : via voice, via SMS/USSD or via internet. It's not new, many years ago MasterCard had a watch with NFC.

Let's take some examples :
- the Limmex with a special M2M SIM  https://www.limmex.com/intl/en

- the Neptune Pine with a full screen http://www.neptunepine.com/

The best example will be to withdraw cash from ATM with my watch, it's may be possible today if only an SMS is nedded.