SafeTag.pro

SafeTag.pro is a stranger-to-responsible-friend masked telephony relay for music festivals and large public events — built as a free, open-source public good for harm-reduction non-profits. It solves a specific, life-threatening problem: your phone dies at 2 AM at a festival, you're disoriented, and a stranger wants to help — but they have no way to reach your crew without exposing your real number or making them install an app. SafeTag lets you register a "rave alias" (e.g. "Jeff420") before an event. A wristband QR card on your person shows only a phone number, a 4-digit event code, and your alias — nothing else. Any stranger, on any phone, dials the number, enters the code and alias on the keypad, and the system bridges them — masked — to your designated Responsible Friend. Neither real number is ever exposed, and the found person's own phone doesn't need to be on, charged, or even present. Who benefits, and at what scale. 32M+ people attend U.S. festivals every year. Electronic dance music events run documented patient-presentation rates an order of magnitude above baseline mass gatherings — one large EDM festival logged ~31 medical presentations per 1,000 attendees. And the most common failure mode in a crisis is the simplest one: a dead phone. SafeTag is a battery-independent way to reach a named, on-call friend at exactly the moment every existing tool — Find My, Medical ID, the lock screen — has gone dark with the phone. Built for a local SF non-profit. SafeTag is purpose-built for harm-reduction organizations, with Bay Area DanceSafe as the target launch partner. DanceSafe is a 501(c)(3) founded in the San Francisco Bay Area in 1998 and the most established harm-reduction org in the EDM/nightlife space — and critically, its volunteers already staff booths at the exact festivals and raves SafeTag serves. That on-the-ground presence is the built-in distribution channel: wristband cards go out from booths attendees already trust. It can actually run. Our cost modeling put the all-in telephony cost at roughly $500 to operate a 100,000-attendee event — about half a cent per attendee. That's the number that turns this from a hackathon demo into something a cash-strapped non-profit can actually deploy: covered by a single harm-reduction grant or Twilio.org credits, with no per-user revenue required. The whole system is open source and designed to operate as a fiscally-sponsored non-profit. What it's not: not a 911 replacement, not a find-my-friends app, not a doxxing engine. Every design decision — masked relay only, OTP-verified double opt-in, event-scoped time-boxed codes, DTMF-primary IVR, rate limiting, confirm-only alias lookups — exists to close the gap between "a Medical ID exists" and "a named, on-call friend is actually reachable when the phone is dead."