Kevin Pringle, 64, a former prison guard, says he has patented a “Smart Fence” designed to stop vehicles from damaging a grass verge at his property. According to reports, the device is a picket-style fence that includes hidden spikes. The spikes are intended to activate when a vehicle hits the fence, drawing a comparison to a police stinger used to puncture tires. Pringle says he developed the idea after repeated incidents of drivers allegedly causing damage to his verge, which he describes as being ruined by motorists he considers careless or inconsiderate. The patent and description of the mechanism have been reported as a deterrent rather than an accident-prevention measure. The available coverage focuses on the invention and Pringle’s motivation, but does not provide additional independent verification, testing results, or details about how the system would be regulated or deployed. The reports also do not specify any confirmed legal or enforcement action related to the device.