In order to be able to develop your APP and be able to communicate with the peripherals of the PAX terminal (eg printer, camera, etc), you can use the Neptune Service and PAX's SDK/API.
This application manages the devices in PAX PayDroid-based terminals. The peripherals/devices include the printer, the card reader, the contactless card reader, etc.
If you want to develop your own APP, running inside the PAX POS, then please install firstly this application into the terminal, and then call the NeptuneLiteApi or NeptuneDiamondApi.
Afterward, you can use the API/ to access the GPS, speaker, cameras etc.
The NeptuneLiteApi provides the APIs of the NeptuneService. This currently contains only the Device Adapter Layer module (DAL).
The DAL, provides uniform APIs of the device operation, therefore hiding the differences amongst different terminals.
Link: SDK (API)
Updated 5 months ago