I'm building an app that allows users to exchange pieces of writing (i.e. short stories) that they have written with each other. The idea is for the app to be very quick, so you find another user and bam your writing is shared. I would also like for there to be no Internet connection required. My question is: would it be faster to use QR codes to transfer the information (in which the app encodes the text into a QR code that the other user must scan), or should I use Bluetooth?
Also, the word limit is 500 words, so the QR codes will not be unreadable.