My idea for world peace

Meeting new people can be hard. figuring out their temperament i cant tell you how many times I've fubbed up a new friendship by totally not reading what they were silently putting out. Why can't people just wear a microchip or something and when some one with the same interests is near by it sends a notification to your cell phone. It would make meeting people so much easier because you would know you have at least something in common with a total stranger! It would spread love across the globe and usher in a unprecedented era of world peace!!