User ID check

If I'm building a website, how can I make sure that the person who gives me the credit card number (for example) is the person who is authorized to use it? Perhaps more generally, how can I reduce the possibility of fraudulent and stolen use of the ID, be it a purchase or access to the system.

I do not work in this area (online shopping), but I think that user authentication should be a very difficult / complex task.

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I would say just stick to standard methods.

Someone is supposed to have a card position if they can provide information that is verified with a payment card gateway. As part of this, for example, this is Mastercard / VISA 3D auth , which adds a passphrase for online payments.



You can try and go beyond this fraud prevention two-factor authentication , but credit card companies are more interested in it so it's easy to follow suit.

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Another common method is the address verification system used by many online merchants.



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