Get current user name in Thunkable X (apple ID?) or maybe other kind of ID?

Hi all, in Thunkable Classic I found an extension that tells me the name of the user / user’s email.

How can I get user’s name in thunkable X? I Do not want to do the hassle with register / login etc. in firebase. I just want to get an unique name that tells me who is using the actual smartphone.

It may be the current user’s name, best would be the user’s email, but it might help me to get an unique name from the current phone.

Thanks in advance … and sorry if this question has been answered too often, but I didn’t find an answer.