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PSA: For those who want signal on secondary phone, use molly.
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this post was submitted on 02 Nov 2023
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Privacy
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Is there any real security-minimizing reason why it's not wanted by the official app to have multiple mobile devices linked to one Signal account? (I'm not even talking about a second phone with another SIM card, I just wanna use it on my tablet).
I would appreciate a simple/ELI5 style explanation if there is one, I don't work in IT.
No, there's no security benefit to this.
One goal of the signal foundation, has been making end-to-end encryption accessible for normal people. Keeping things simple one phone number per account is one method they used to do this. It does diminish an anonymity, it's using phone numbers as a form of global ID. Which isn't great.
So people could argue, that well having multiple signal accounts on the same device aren't against the philosophy, they're not going to spend any engineering effort making it happen.