Smartwatch for mobile banking ?

                                                                       (photo Sony)


What could be the usage of smartwatch for mobile banking ? Many new smatwatches are connected to smartphone via bluetooth. The screen is small and the digital keyboard is easy for number.
If you take the example of the Sony smartwatch, you have specific apps on google play. You download the apps on your smartphone, you enter on the smartphone the parameters you want for your watch ( for example weather  in Paris) and then you can pilote your smartphone from your watch.
There are already about 20 Apps for your watch. One is financial : it the currency converter.
We may imagine some banking usages for the smartwatch :
- alerting from bank via SMS etc (for example 3Dsecure)
- balance checking and last transactions
- mobile payment in some cases
- ATM when the one time password is send by SMS
- internal transfer.
One problem is may be the bluetooth security, even bluetooth sems to come back for mobile payment according to a microsoft trial.