Humanoido has invented the SPACE1 Space Presence tracker
The Space Presence Tracker is a technology machine that attaches to the astronaut under the skin and data logs location continuously. A single SPT can help analyze an astronauts health. For example, if larger than desired radiation levels occur, the SPT can resolve the location where the greatest number of radiation rads are being bombarded by examining the location habits of the astronaut. The SPT can help find a lost Martian who is exploring Mars, a lunar explorer lost in a crater or lava tube, and can also group together data in a swarming location of all space colonists. The first tracker V1.0 works with pre-positioned stationary markers. Advanced versions could use off planetary GPS satellites for triangulating positions in free space.
