This project originated from a company specializing in car and handheld navigation devices and map databases. They wanted to use micro display technology (that is, the small display in VR glasses) to introduce a super power-saving handheld navigation device. During the implementation of this project, most of the time was thinking about "how to create demand and innovative use situations", and then several different production and use situations were proposed one after another, including: wild hunting use, border smuggling detection, military sniper ranging, Golf ball assist and other use scenarios.