[jonasmalaco]

That information could come in handy, cool.

A complementary method is to attach a writable NFC sticker tag to the phone. Though it has to be placed far enough from the phone's NFC antenna in order for both/either to work.

The upside is that you get a second tag of your choice (physically) on your phone. There are even UID-writable sticker tags out there (even if they can be a tiny bit harder to find).

You also don't need to replace your default transit card, which could be inconvenient depending on where you live.