one of our products was copied by a chinese company. The HC08 CPU program code was copied, too. We are now looking for anti-counterfeit technologies.
We made some tests with our EPILOG Laser Engraver and tried to remove the markings on the HC08 and some other chips. This seems to work well, but if we hit a pin or several pins with the laser, something gets damaged, and the isolation between pins is suddenly below 100k Ohms or wourse.
Does anybody have experience in de-marking chips using a co2 laser or any other technologie?
Thanks a lot from germany