Create a local configuration file/DB for my app (CORDOVA)

Hello everybody…I am currently developping an app that will serve as a kiosk app.We plan to deploy more than one terminal(kiosk) per office,so i need a way to differentiate between those kiosks.So kiosk app 1 should know it is configured for this office,while maybe kiosk app 2 knows it is rigged up for that other office.

If i go the mongodb route, i dont know how to get the app id;maybe it may change on restarting the app so it wont be any use…

So what i need is a way to have a local config file where the app fetches its default settings and that can be overwritten …Thank you guys