I was annoyed by the news that my brother-in-law had visited our father-in-law in the township, and his vehicle was vandalised. It has happened to me, too. I have been designing a device to pick up raiders a block away. The sensor, about twenty components, has already been accepted for publication. But the sensor still requires optics, plus a "sound bomb", plus additional circuity to prevent the bomb from unsettling the sensor. Sometimes low-tech is better. I now plan to design an alarm which relies on a trip wire. That is something my father-in-law could use, too. OBSERVATION: The only problem with a trip wire is it may only work once. After that, raiders may be looking for a trip wire.
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