At ProMat this year I looked at a system from Keytronics who mfg's forklift monitoring systems. I was impressed with the fact that this system goes beyond the general impact monitor and can notify of an impact by email notification, this is just a small example of the systems capabilities. I am ordering the Keytronic system on our next new machine and will put it to the test. Keep in mind any system is only as good as your company's policies.