Originally Posted by
evergrn
I just lack faith in these IC cards' durability, because hotel room cards crap out all the time.
You don't have to worry about the durability of Felica cards. Handle them properly, i.e. don't fold or bend them, and they will work for years. These NFC cards have one tiny silicon chip connected to loops of wires that catches the magnetic induction fields for power. The most common failure is a break in connection between the chip and the loops, or within the loops.
My 2004 vintage Suica card still works.
Most hotel key cards are plain ol' magnetic cards. They are subject to external magnetic fields that may alter the data on the stripe.