Sam Altman's World brings iris-scanning verification to Tinder

Tinder users can now prove they're human by staring into a glossy white orb. Sam Altman's identity verification project, World, announced Friday that its biometric verification badge is going global on the dating app—following a pilot in Japan that apparently went well enough to greenlight a worldwide rollout.

The badge, displayed on a user's Tinder profile, signals that a real, living person went through World's iris-scanning process. Verified users also get five free "boosts"—a paid feature that normally costs money and bumps profile visibility by up to ten times for 30 minutes. A modest but tangible incentive.

World's "proof of human" tech is expanding well beyond dating apps

The Tinder launch was just one piece of a much bigger announcement at World's "Lift Off" event at The Midway in San Francisco. The company also unveiled Concert Kit—a tool letting artists like Bruno Mars and 30 Seconds to Mars reserve tickets exclusively for verified humans, a direct shot at the scalper bots that plague Ticketmaster. Zoom and DocuSign also announced integrations, letting users require World ID verification before joining calls or signing contracts.

World's core technology works through its Orb device, which scans a user's iris and converts it into an anonymous cryptographic identifier—a "World ID." The system uses zero-knowledge proofs, meaning it can confirm you're human without revealing who you actually are.

Scaling has been World's biggest hurdle—and the company is still working on it

Getting people to physically visit an Orb has always been the sticky problem. So World is introducing tiered verification: Orb scans at the top, a government ID scan in the middle, and a new selfie-based option at the bottom. The selfie tier is low-friction but admittedly lower security too. World is also expanding Orb availability across New York, Los Angeles, and San Francisco—and will bring an Orb to your location on request.

World says 18 million people have been Orb-verified so far, up from 12 million last year.