My son and I spent a week in Paris last month. My unembossed (flat) Visa card worked everywhere . . . hotels, restaurants, tourist spots . . . until I tried to pick up a car from Europcar.
I had prepaid for a 2-day rental . . . got a great rate on the Europcar website, including a one-way drop-off in Lyon. The rental agent insisted on asking for an embossed card for some kind of security deposit. I felt like I'd taken a time machine back to 1975. Because I was stunned, I neglected to ask my son if he had an old fashioned card. So I canceled the reservation.
As we walked out of the office in a daze, my son fished through his wallet. He had one of those cards. So we walked back into the office and asked them to give us the Panda. They said they couldn't because I canceled that reservation. But they'd be happy to re-rent it to me (the exact same car) for twice the price. I accepted the offer to avoid more drama.
When I got back to the U.S. I had a bill for four times the cost of my original reservation. Never again will I use Europcar!