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The One Click service is used to implement CIT COF operations in IPS Assist.
By participating in the program service, the company maintains its database of customers, giving them an unique number (CustomerNumber), while the Assist system stores the encrypted credit card data corresponding to those merchant customers (CustomerNumber).
While performing of order payment, the customer gets an offer to save the card for future payments using the One Click program service.
The One Click program allows service allows a regular customer of a merchant to make new purchases without entering card data. The payment requires only confirmation by the CVC2 code. However, for subsequent operations with a saved card, CVC2 will usually not be requested (except the cases where special settings are made at the request of the merchant).
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