Livewire

Livewire is a specially made variant of the more common Razorwire, designed to be able to combat robotics as well as man. Visually there is no difference between the two but how they function, with Livewire being coated in nanobots that can completely dissolve metals in seconds. Typically regular Razorwire is a static deterrent against flesh despite it being easily crushed or cut or disposed of in another way. Livewire however can react to stimuli, such as a leg brushing up against, a pair of pliers performing a cut, or even tank treads rolling over it. When such a thing is detected the Livewire reacts by launching towards the disturbance and wrapping around it, crushing the target with hundreds of pounds of force, slicing into the target and allowing the nanomachines to do their thing.