FlightOP is a tool for visualizing boarding pass data.
Just scan a boarding pass using any suitable scanner and copy the data into the data input field.
I have found that the following application will allow you to scan QR-codes and use the data as url parameter:
https://itunes.apple.com/se/app/qr-reader-for-iphone/id368494609
It allows you to scan a boarding pass, and then automatically open FlightOP with the scanned boarding pass data.
In Settings/Barcode Settings/Send barcode to web server, configure the app to point to your copy of FlightOP or the following website URL:
https://jakobpetersson.github.io/FlightOP-web/?data=[data]
npm install
npm run webpack