These are essentially what someone will use to pay for something via debit, credit, or digital payments. You know: tapping cards, swiping cards, entering PINs, or using some sort of digital payment method. Since they deal with sensitive materials (payments), they almost always run a proprietary OS and an ARM, RISC, or MIPS CPU. EOPs for these could very well be compromising to financial data, so it is best to simply evaluate what they are capable of running.

It’s quite a common fact that these run Linux. They’re everywhere, and sometimes one can see them on “system information” with Linux specs. Who knows if they can be hacked or cracked open. Models typically have a few hundred MB of flash, and up to a few hundred MB of SDRAM.

https://www.verifone.com/en/us/mpos

https://www.verifone.com/en/us/countertops-pin-pads-multilane