> Advocates of truly neutral carriers, open code, et cetera, et cetera, so on and so forth don't really have an answer to spam in my experience.
Seems trivial by but allowing anyone to message anyone else unless they exchanged their contacts physically (by showing each others QR code or something).
Right, aside from friction for users, spammers will attempt to find ways around any system you implement. They are malicious actors. I don't think protecting a system against malicious actors is trivial.
Seems trivial by but allowing anyone to message anyone else unless they exchanged their contacts physically (by showing each others QR code or something).