Technology for short distance device

Tags:
Bluetooth
Communication
Hello, My name is Thomas and I have a question for you. If you had to build a device that warns you when something leaves a 10 meter range from you, which technology would you use? I was thinking about Bluetooth, but I don't know if maybe there is some application of radio-waves more specific.
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  • ToddN2000
    Sounds like you are trying to develop an anti-theft type of application. Make sure your devices don't wander off. The problem is if you use Bluetooth it could be disabled and defeat the purpose. Have you looked into something like the stores use for theft prevention using RFID? It may help us to know more specifics about the project.
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