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The additional fields are also added in the silentpay response packet. These fields allow the merchant to provide additional payer authentication using 3-D Secure technologies (VISA cards) and Mastercard SecureCode  (Mastercard catds).

Currently, for For cards of international payment systems VISA and Mastercard in most cases version 2 of the 3D-Secure protocol is used by additional authentication of the customer, the most issuing banks operate according to the 3-D Secure protocol version 1 for all types of cards.For a more secure authentication process, issuing banks and payment systems are switching to a new version 2 of protocol for all types of cards (VISA, Mastercard). To support a new generation protocol, a merchant has to make changes to the customer authentication processsame version of the protocol is also used for UPI cards. For cards of the BELKART payment system, authentication is carried out according to version 1 of the protocol.

To start the order payment, the merchant sends an authorization request to the IPS Assist server. The following data about the customer device and browser must be added to the usual request parameters, if this has not been done before for operating with the SOFI. This data is required in the new 3-D Secure protocol version 2.

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