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It makes me wonder if the spammers are already using bots on their end. The future is scary. Looks like communication apps will need some pub key to distribute to contacts in the future.

The reason I left telegram was that I got some spam and tried to make my number undiscovererable. Then I found out that I needed to be a premium subscriber to have that feature :D

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> Looks like communication apps will need some pub key to distribute to contacts in the future

that solution is unworkable because non-technical people don't know (and don't want to know) what a pubkey is, and they still want to be able to dictate their number to somebody.

Unfortunately, the only solution that makes sense here is to restrict message sending to authorized devices and authorized apps.

or tap two phones or connect with phone number and then whitelist (which sends the pub key across).

> and tried to make my number undiscovererable

You can now. I've setup my profile to only be discoverable by contacts that are already in my contacts list, and have never paid Telegram a dime.

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