this is what first came to mind for me too. I'm in my 40s and still saw them used semi-frequently during my life. In ~2015 I actually paid using one in a taxi, that was the last time.
Heh, in 2014 I remember taking a taxi that only accepted card using an imprinter, which was unfortunate because I had just gotten a new card and the numbers weren't embossed. He had to drive me to a gas station to get cash from an ATM.
