I had no clue until a cashier did it for me in a European country. There may be a little logo like this either on your card or on the materials when you get you

I had no clue until a cashier did it for me in a European country. There may be a little logo like this either on your card or on the materials when you get your card: https://en.wikipedia.org/wiki/Contactless_smart_card#/media/File:Universal_Contactless_Card_Symbol.svg https://en.wikipedia.org/wiki/Contactless_smart_card#/media/.... Once it was demonstrated to me, I went back and found out the cards I've had since 2013 (pre-chip).