The law enforcement agency registers these bracelets ... GPS and satellite that can be interfered by topography or weather," Welch said. "It's an awesome program. I had grandparents that had ...

The device does not use GPS location. Project Lifesaver says on average someone is found within 30 minutes, which it says is 95% faster than searching the traditional way without the bracelet.

The researchers used GPS logging devices and machine learning as "digital biomarkers" to compare the driving of people who have preclinical Alzheimer's but are still cognitively normal to a ...