> Ideally, a weaker person would be able to use a tool to provide self defense in the most limited way possible without causing harm or damage to anyone other than the attacker.

Landmines in the garden it is then. Hard to use offensively.

A shame if a child that accidentally threw a ball in your garden steps on them, or even just the overweight neighbours cat. Or a visitor stumbles on them duling a bbq. But such casualties are apparently a small price to pay for feeling safe.

Perfect use case for IoT mines and AI object/face recognition

Why would a hypothetical attacker wander through the garden anyway, instead of walking the normal path to the front door like a normal person? That face recognition will surely blow up the first pizza delivery person that has the misfortune of delivering to your house. I hope you tip well.