Originally Posted by
sdix
Data point on the ATM card: I've used it 5 times now and each time it is coded at the POS terminal as a Amex Credit Card - no pin required.
Tap or insert? I've noticed with my Visa/MC debit cards that a lot of places have stopped trying to run them as debit when tapping (probably because they never got debit routing working anywhere near 100% properly with contactless), so it might work the same way with AmEx debit too.