Forum | Appery.io

I have been going back and forth here in my learning with appery. Since there isn't a plugin for RFID, I wondered if I could use a button, onclick, to launch an external program on the android device and then read it's screen in the background or even read it's input on disk? Are variables limited to the scope of appery or could I access them outside of it.

If there is API to launch such program, then you can do it. You are not limited by Appery.io. You are only limited by what the browser can do. Your app runs in the browser. You may also want to check PhoneGap API.