A Loyverse user also shared about his tablet, in this own words "Acer Iconia Tab 10 A3-A40 has TWo USB ports (A MUST). One micro USB port for power and other to hook in OTG ( on the go cable) to USB HUB, so you can plug in USB printer, USB scanner etc... works like a charm. Good Luck : )"
Have a look how i have fixed the tablet to the desk
Lenovo Yogatab 3 10"
The stainless steel fixture fastens the tablet to the table (there is a nut under the table) and also allows the tablet to rest on a custom angle to use it when standing. In other cafe I have a very simple and cheap solution made out of special door handle bolt and nuts.
Loyverse can work on any device with Android 4.2 and more and on iPad for sure.
But I know that Sumsung tablets work fine without any problems.
Just I can recommend to you that it has to support Bluetooth if you want to connect wireless printers.
I'm also interesting... do you use Loyverse in one location or in multi-store?