You can think of it this way. When you walk into the library, you don't have to borrow books, but you can also read books in it! ! So you don't need a library card ! !

And the reader card just has this point, you swipe in. If you want to borrow books, you can use a library card! !

I feel that these two cards can be combined into one, that is, one card uses two systems!

If it is two separate pieces, as I said above, there is definitely nothing wrong with it! ! !