Smartphones have long played a central role in our everyday lives. Making phone calls? Yes - but this now accounts for only a very small part of its use. Instead, the smartphone has developed into a versatile communication tool that has become an indispensable part of our modern world. And of course, digitalisation has not stopped at banking. The mobile phone has become a "digital wallet" that enables us to make cashless payments or conduct banking transactions on the go. And: the smartphone also takes on an important and hardly imaginable function as an access control - whether to a digital or physical location.