This app was mentioned in
with an average of
Just install a barcode scanner app and scan the QR code OP has posted. All the info like the passenger's full name, Aadhaar number, PNR etc will be displayed.
Barcode Scanners by Manatee Works is significantly faster and has zero bloat, it reads barcodes and that's it.
It's also on Windows Phone, iOS, Blackberry and Android.
I personally like Barcode Scanners, it's available on everything (even blackberry) and works amazing. It's kind of ridiculous how quick it is and recognizes stuff no other app can.
It seems all the negative reviews are of people that want it to be more than a barcode scanner, which I'm glad it's not, do one thing and do it well is better than everything and the kitchen sink of many apps.
Cognex barcode scanner
There is a stupidly good app though that doesn't do all kinds of bullshit or have ads and it's free.
iOS, Android, and Windows Phone, Manatee Works Barcode Scanners
It supports every barcode known to man and is damn near instant in recognition.