You have to have a secure channel to exchange phone numbers too. The code could ... | Hacker News

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		ubercow13 on Aug 23, 2019 \| parent \| context \| favorite \| on: A Telegram bug that disclose phone numbers of any ... You have to have a secure channel to exchange phone numbers too. The code could be communicated simply using a QR code. Other messengers already work this way and it works well.

couchand on Aug 23, 2019 [–]

Yes, the difference being that a phone number is an established identity mechanism and you likely already know it.

ubercow13 on Aug 25, 2019 | [–]

Yes but it's a kind of bad one. There are many ways you can lose or change your phone number. Email address is a better identifier.

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