Card payment processing fees are one piece in the card payments puzzle. Your card payments service will need to integrate simply and easily with your whole technology platform. Once you have a method of processing credit card payments in place you may need to update your point of sale software and hardware to actually accept them. For example, if you are using a PSP that provides you with an ePOS application, it may be compatible only with specific tablets, receipt printers, and barcode scanners. if your existing hardware is not compatible you will need to replace it, and this should be factored into your card payments decision making process.