we use an old version of pro4 , green screen only. [ Version : 4.6000 Revision : 2.1.3 ] .
I know the system is old, but we are able to interface with nodejs to get data for sales graphs on html5 screens. So I hope we will be able to deal with text data going to and from the device.
Could you tell me about the device?
And possibly we could talk about hiring your company to help us get set up?