Start chat by presenting and scanning QR code

[piratov]

https://groups.google.com/g/tinode/c/xYcemyHlQbI

Describe the solution you'd like Add additional ability to search ID by QR code Show and read ID as QR code It is convenient to show the representing ID (user, group or channel) as a QR code, not only as text. Sometimes just showing a QR code with an ID is easier. Than to send a text ID as a result, it is still to be searched for in the search. QRcode will save time and make ID search easier.

Describe alternatives you've considered Authorization by QR code or invite user inside Tinode. Follow links by QR code. Share links of various information .. groups, channels, users etc.

Additional context As an option, add buttons (like an icon) to get a QR code next to the ID text. In the search by ID, add the ability to read from the camera (where you can add as an image) QR code.