Accessorize Your Wardrobe with Technology Wi-Fi network signal strength should probably be a built-in six-sense for all geeks starting at birth. At the hospital, baby geeks could be identified via tricorder and retro-fitted with the needed equipment. But until that time we present you with this fine Wi-Fi Detector Cap. in use Similar to our Wi-Fi Detector Shirt, this cap combines apparel and technology into an irresistible geeky hybrid. The glowing bars on the cap light-up to indicate the 802.11b/g Wi-Fi strength in your general vicinity… and with your newfound Wi-Fi sense you’ll be sure to make lots of friends like routers and iPhones.