**Tell HN: Idea to End TXT Scams** 1) Don't ever send app notifications from alphanumeric senders, only ever send from numeric senders to which the recipient can reply 2) When someone creates a relationship with you, use a similar flow to the "double opt-in" for email subscriptions. You send then a welcome notification, and ask them to save the number in their contacts. ONLY ever send notifications from this number 3) Every TXT ends with "Suspicious message? reply REPEAT to re-send the last message we sent you" 4) The reci ... ⌘ Read more