We have in France ID Cards that are not compulsory. It is just such a hassle to use something else that everyone has one. Alternatively, for minor things, you

We have in France ID Cards that are not compulsory. It is just such a hassle to use something else that everyone has one. Alternatively, for minor things, you can make a declaration on your honor. This is super useful in, say, a library where you need to enroll.