World, the Sam Altman-backed digital identity project, has unveiled on Friday what it calls its most significant upgrade yet to World ID, positioning the system as “full-stack proof of human” infrastructure aimed at consumers, enterprises and AI agents. The overhaul, announced at an event in San Francisco, comes as concerns mount across the tech industry over bots, deepfakes and AI agents impersonating humans online, a trend World is explicitly targeting with a broader push into authentication, payments and internet services. Altman's other major project is OpenAI, the firm behind ChatGPT and tools using the large language model AI platform. World’s system relies on its custom-built “Orb” devices to establish what it calls proof-of-humanity. To obtain a World ID, users must visit an Orb in person, where the device scans their face and iris to generate a unique cryptographic code representing that individual. The images are deleted after processing, according to the company, and only anonymized fragments of the code are sent across a distributed network to confirm the person has not previously registered. The result is a credential that can prove someone is a unique human online without revealing their identity or personal data. Some critics, however, have flagged the use of biometric scanning via the Orb as a controversial aspect of the system. "World 4.0 is powerful, scalable and open," senior executive Daniel Shorr said at the event. "In the age of AI, being human will be incredibly valuable and the internet will want to know you're human," he added. The company is also introducing a dedicated World ID app, currently in beta, which will allow users to manage credentials and authenticate across platforms. The app reflects a broader ambition to make proof-of-human identity as seamless as logging into a social media account. Alongside the protocol update, World detailed a slate of integrations aimed at embedding its identity layer across consumer platforms. On