52ViKING MPOS works on Android 8 or newer. The Android device that you use for MPOS must support NFC (Near-Field Communication, a set of communication protocols that enables communication between two devices over a distance of 4 cm or less) and have an NFC card reader in order to handle card payment. 52ViKING MPOS in principle runs on any Android device that lives up to the version and NFC requirements, but Fiftytwo has successfully tested that 52ViKING MPOS works on the following Android devices: Point Mobile PM45, Point Mobile PM85, unitech EA630, Zebra TC52, Zebra TC57, and ELO M50. The tested devices are all enterprise-scale devices with built-in barcode scanners. Fiftytwo recommends that you use a device with a built-in barcode scanner, but you can also use a device's camera for scanning barcodes. An added benefit of using devices with built-in barcode scanners is that they're often sturdy and rugged devices that are suitable for use in a busy professional environment.