POS Hardware and MB

Anyone have any experience using POS keyboards or even touch screens with multiboxing? I'm assuming it's possible as long as the hardware/software are compatible with Windows, but I could be wrong...

Example of said KB

I'm also not sure what kind of keys the linked keyboard has, I know there are the kind that a normal KB uses that are sprung, and others that are just pressure sensitive and more annoying to use, anyone know what these two types of keys are called for reference?

Touch screen would be interesting if compatible, but I'm not sure what you need to connect them up etc, I assume a free monitor port and their software?

Thanks in advance for all the kind help and lack of flaming guys >.>