Why do some services require a photo of a passport and a card?

Question

Payment systems

I don’t understand why, when adding a card for payment, some services ask for a photo of the card next to the rights or passport. Fraud or real troubles on the security of the service? How safe is it to provide such photos?

Answer 1

An additional measure of protection, services protect themselves from scammers who steal card data.
They need a photo to make sure that you are the owner of the card.
If someone pays with a stolen card, and then the real owner disputes the payment, the service will have to return the entire amount and pay a fine for chargeback.