He helped build Meta’s smart-glasses technology. Now he wants to take on Big Tech’s grip on personal AI

AI-powered smart glasses promise to keep your phone in your pocket, but their usefulness depends on how much work they can take off your day. Meta ties its glasses to its own AI services, while Google is courting eyewear makers with Gemini. As an AI assistant learns a wearer’s preferences, it can become more useful and harder to replace. If that knowledge cannot move to a competing brand, choosing better glasses could mean starting over with an assistant that knows less about you. Ash Saul...