GPS-equipped walkers promise to keep elderly patients on track

We've already seen GPS used to track elderly patients, but some student researchers now look to be taking the idea one step further, with them outfitting some nursing center patients' walkers with a GPS system that helps guide them around. While the exact technical details are a bit unclear, the system apparently uses GPS when the patients are out and about, and relies on a WiFi-based system to direct 'em around inside the nursing center itself...

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