Originally Posted by
YariGuy
I don't know how they print it on, but I suspect it's disappearing ink. Put the card in your pocket for a few hours and the print comes off.
The printing looks similar to the flimsy loyalty cards that my local shopping area issues. The one in my wallet says that it may be damaged by water, heat, and magnetic fields - but it has stood up well to the rigors of daily life. I would guess that the printing on the TTP card is a little more robust:
https://www.isa.go.jp/en/publication...ine_index.html