sure...
i've installed many shockwatch systems on trucks
also dealt with a system made by keytroller which was a keypad access system with shock monitor.

now i will say as long as these systems are managed properly they can serve a useful purpose but in most cases i've seen the management side appears to fall to the wayside. It seems the concept attracts the customer to the purchase but when it comes to actually taking the time to maintain the monitoring that's where i see the failure of it's effectiveness.