The idea is to build a product that detects approaching moles and scares them away with vibrations.
The detection would be done via sensitive seismic sensors. The repelling would be done with small vibration motors.
Protect your garden produce from being uprooted without dropping poison or killing the moles. Protect your lawn and yard from turning into this:
Aparently it is not easy to scare moles away. A small industrial vibrator should work. If it doesn't the scaring module could easily be replaced by something more extreme.