I wasn't able to get all the info into one QR code, so I used a series of them (looping) to send all the data. I figure I can use this approach to send files too.

What is the capacity of those QR codes?

When I played with WebRTC, I was able to pack the relevant SDP data to just 80 bytes:

- 1 Type of the SDP - Offer or Answer

- 1 Packet size in bytes (not including ECC bytes)

- 4 IP address of the transmitting peer

- 2 Network port that will be used for the communication

- 32 SHA-256 fingerprint of the session data

- 40 ICE Credentials - 16 bytes username + 24 bytes password

I found a similar limit (although I still want to try with different options for the qr codes). I send the data as is by splitting it into smaller segments and looping through them with more than one qr code.

> I figure I can use this approach to send files too.

Or, you could send the files over WebRTC datachannels after establishing the connection!

For sure, I am just interested in pushing this experiment and see how far it can go.