We see many tracker devices that serve various purposes. Most of them are for fun, for securing things, but this one earns respect because it is used to track Alzheimer’s patients. This is quite problematic area for relatives who have such a patient. He can leave and then forget where to return. This little tracked device may help reduce the trouble of finding such people.
LoganP2 shared his simple build where he uses Arduino micro, GSP breakout board and Adafruit FONA board for getting location from a distance. Everything is placed inside 3D printed box. It seems that after prototyping there are plans for making more compact and more ergonomic version.