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6 hours agoIt is supposed to to keep your SSN secret and not carry the card with you everywhere but you have to memorize it and everyone and their dog is gonna ask for it. It is kinda scary how many times you have to give it out to random people over the phone or email.
In theory yes. In practice you cannot expect that every user maintains a server and one with internet facing ssh, specially a message app and the average non technical user.