thanks for the links. sounds good to look at.
Other risk part i have in application is calling hw decoders from gst api for playing mp4 videos. not sure how well that is supported in nw.js especially for intel and arm arch.
the closest example of the application i have would be some sort of kiosk for rail reservation. people come, select journey and time, do the payment and get the printed ticket.
For such a scenario, i'm exploring nw.js.