Others have gravity-slave. If you are happy with everyone in the hotel and all the people they know having your credit card number go ahead. The hotel scam is rife in France and Canada.
Other scams:
If reception phone you in your room and ask you for your card number to pay for something it’s not reception.
Anywhere you hand over the card. Stick some black masking tape over the three digit number when you travel in France so that when you hand over the card in petrol stations etc. they can’t film both sides between the hatch and the card reader – it can be done so fast you won’t even notice but you would notice them picking off the tape.
Petrol pumps: cover the keypad when typing your pin number. The crooks film from a distance and equip the pumps with gadgets to record your card number.