If possible, take two or more different cards and keep them in separate places. For me, one in my wallet, another in my day pack, and a third in my big pack (I use the transport service).
Also, I have a duplicate copy of my ATM card and keep them separate. The account is the same but, if one is lost, no one else would likely be able to use it because a PIN is required.
I have never understood why a PIN is not required for a credit card purchase. At most gasoline stations, you have to enter your billing address zip code. But, anywhere else, no ID is required. Maybe I am missing something here, but it doesn’t seem to make sense.