Forgive me if this has already been addressed. But all the notes about verifying a contact involve getting together physically and scanning each other's QR codes. Is there another way I can share information with someone remotely, out of band, say by reading my public key in its entirety to him/her over the phone? Or, if we are speaking with each other at the time, is sending a JPG of our QR code through email to scan as good? If reading our public keys to each other is good, how do I change the verification level? There is nothing on this on Threema's site that I can find, verification only discusses scanning each other's QR code.
Threema is my most secure messaging app and I want to verify everyone I use it with (not many), but we won't get together physically to scan codes, most likely.
Thank you for your assistance.