Description:

The Pay In widget enables customers to complete payments with credit or debit cards (VPOS) and receive the funds on the merchant’s account.

Using VPOS allows you to perform:

• Direct payments: The client introduces the card details and the payment is processed. Card details are tokenized and sent via callback for future tokenized payments. A secured terminal must be used.
• Preauthorize: The client introduces the card details to verify if it is valid. Card details are tokenized and sent via callback for future tokenized payments. A secured terminal must be used.
• Recurring payments: Tokens created with direct payment or preauthorization can be used for one-click or recurring payments. An unsecured terminal must be used.
• Refunds: Transactions may be refunded in full or partial.

Unnax will configure the VPOS and will provide the required information to perform secure and not secured 

payments for each credit card terminal.

More info in this link.