A point of sale (POS) is the hardware merchants use to process payments and complete customer purchases.

Modern POS systems run on tablets using a kiosk (restricted) mode such that users cannot interact with other features (i.e.: other apps)

One way to escape the restricted mode is to find a link in the available application which will redirect you to another app - in this case the browser or App store.

Once that is achieved, you can navigate to a malicious application that you are hosting on the internet or install an APK that will trick the users into entering their credit card information (skimming).

How to do it