 It chose the latter in order to offer better security, especially on the Internet payment side.Therefore, InternetCash required merchants to redirect the customer to a new web page, which was operated by InternetCash and was called the "InternetCash payment window", where they would type in their card number and PIN.Part of the card number together with the transaction details and timestamp was then digitally signed by that window (using InternetCash's hardware encryption devices) and then sent back to the merchant for storage and reference.