Cardholder Registration and Identification Tools for Transactions

1. 3D Secure

This is a security protocol used to prevent fraud in e-commerce transactions. It was developed by Visa and MasterCard companies. The protocol provides an additional level of security by allowing for an additional authorization of the buyer. How it works: when making a purchase over the Internet, the user enters their card details. If the card-issuing bank supports 3D Secure, the user is redirected to the bank's secure page, where they must enter an additional password to confirm their identity. After successfully entering the password, the transaction goes through. If the password is entered incorrectly, the transaction is rejected.

2. One-Time Password (OTP)

This is a one-time password that can be used to authorize a transaction or confirm a user's identification. It is typically sent to the user's mobile phone and must be entered into the online form to confirm the transaction. How it works: when making a transaction, the user receives an SMS on their mobile phone with a one-time password. The user enters this password into the form on the site. If the password is entered correctly, the transaction goes through.

3. CVV/CVC code

This is a three-digit code on the back of a credit or debit card. It is typically used to confirm that the user actually has the physical card when making an online purchase. How it works: when making a purchase online, the user is usually required to enter this code in addition to the card number and expiration date. If the code is entered correctly, the transaction goes through.

These tools help ensure transaction security and protect the user's card information from unauthorized use.