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Nagaokakyo City, Kyoto Prefecture, which has implemented an initiative to watch over the elderly with Bluetooth.

One year after the project in Nagaokakyo, Kyoto, to watch over the elderly with Bluetooth

Management mechanism using Bluetooth

Small, short-range wireless communication tags will be loaned free of charge for two years to people with dementia and elderly people living alone who have registered in advance. Receivers will be installed at 38 locations in the city, including streets and stores, and citizens will be asked to install a dedicated application on their smartphones that will serve as a receiver. When a person carrying the tag comes within 15 to 30 meters of a receiver, the tag detects the radio wave and sends the date, time, and location to a server. Based on this information, the city will contact offices and citizens who are cooperating in the search for the missing person by e-mail or other means.

Here is how it is illustrated.

Giving up on real-time performance.

I know this may be a budgetary concern, but this is not the way to have GPS and real-time monitoring. This is probably the most expensive.

The Nagaokakyo City initiative is only a Bluetooth sensor, so it can only catch the "most recently passed here". The information is not immediately sent to organizations that cooperate with the investigation, but seems to be distributed separately by e-mail from the city. It is an idyllic system.

In one case, the received information of a man who went out saying he was going to a familiar restaurant led to a search of a place not on his usual route, which led to his discovery. (omitted) There was also a case in which a man left with a tag but was not detected by any receiver in the city and went to Osaka.

I don't want him to go to Osaka.

Low-cost version of Find iPhone

It would be best if we could do that... I look forward to future efforts.