CashRegister is a powerful platform that allows merchants to accept payments over the Internet with a minimum of software. Through remote secure interactions with the CashRegister server, a merchant can easily and effectively process credit cards through the merchant's bank of choice. is a powerful platform that allows merchants to accept payments over the Internet with a minimum of software. Through remote secure interactions with the CashRegister server, a merchant can easily and effectively process credit cards through the merchant's bank of choice. iPayment, Inc. is a registered ISO/MSP of Wells Fargo Bank, N.A., Walnut Creek, CA American Express requires separate approval. Copyright ® 2003 iPayment, Inc. All Rights Reserved.