It's very simple to pick up a bike with the 'bikeMi' app:
Log in from the app (only if requested) and active geolocation;
check on the map the closest station to your position;
get closer to the station;
select the station from the map;
select the type of bike you want to use and choose 'Unlock bike';
check on the app the slot number where you can pick up the bike;
lift the handlebar up and start your trip.
Every annual subscriber who already owned a bikeMi card can continue to use the card itself as an alternative to the app for enjoing the service. The same holds true for all those customers who have associated the ATM card to their bikeMi profile.
Anyway, the suggestion remains the one of using the 'bikeMi' app; a smart tool which grants a fast and effective user experience 👌