Japanese company FOMA have shown off a prototype of a pair of wireless safety helmets. Type A has a built-in camera and GPS module, and Type B has a vibrate mode to warn railroad workers when they’re about to be mown down by a train. Both helmets weigh around 800-900 grams and are expected to be lighter than the average. FOMa is expecting to cut that by around half of the size of the current average safety helmet by around 30 grams.”]
Source: https://gizmodo.com/fomas-wireless-safety-helmet-is-risky-peeping-toms-best-280073