Hey Product Hunt

I'm Prajval, a robotics undergrad at ASU. Tagg started at Cal Hacks this year. The idea, from the original 2 AM spec: you meet someone once, and it remembers them, checks who they are, and handles the follow-up.

How it works:

- You make your Tagg card once: name, headline, your links

- Someone you meet scans your QR with any phone camera. No app for them to install, no account needed to see your card

- Tagg saves the moment automatically: when you met, where, at which event

- You add a private voice or text note and a selfie if you want

- Later you just ask: "Who did I meet at Cal Hacks who works on robotics?" and Tagg answers

What makes it different:

- The other person does nothing. Scan, tap save, done. Sign-up happens on the scan page itself, so the connection survives

- Your notes, places and photos about people stay private. Never shown to anyone

- The network graph is consent-based: friends of friends show up only when everyone involved opted in

- It can talk to your AI through a read-only MCP server (private notes stay off by default; the Claude connector is in early testing)

Who it's for: students, hackathon regulars, conference people, anyone who meets more humans than their brain can file.

What's next? Agent-to-agent call scheduling is coming in the next update. Your Tagg agent talks to their Tagg agent and books the follow-up call, straight from the original spec. I'd love your take on it.

Tagg is free and live at tagg.prajvalarora.com. Works in any browser, installs as a PWA.

Question for you: what is the one thing that would make you actually open this after your next event? Brutal honesty welcome.