The question here is, how do you operate this device for transactions when there is no button? and the screen is not big enough to operate as screen touch. I am only seeing flash drive. Tell me more.
There are two buttons on the Ledger Nano S. Do you see those two black things popping out in the first first picture? Look closely at the top of the casing. Those are the buttons. You use them to navigate around the interface, open/close different menus, confirm transactions, etc.They are easier to see on this picture for example:
