As a follow-up to my complaints (documented here), representatives from 3M met with my hardware and support management people. While they admitted that there had been a massive failure on their part, they refused compensation. Our experience is that their unit based on resistive technology is flawed and should have been recalled. We have advised to them that the only reasonable course of action is the immediate replacement of the resistive units with capacitive units and appropriate compensation for disruption and lost business. That is has taken more than a year just to get attention of 3M is an indictment of their customer service. we will not recommend 3M again.