Author · Software Expert Witness · CTO
I'm an embedded software expert with 30+ years of experience building firmware for safety-critical devices. I'm the CTO and co-owner of Barr Group, where we connect patent litigation lawyers with expert witnesses.
I led the Toyota unintended acceleration investigation, an 18-month code review that uncovered critical software defects in Toyota's engine control firmware. I've also served as Editor-in-Chief of Embedded Systems Design magazine, taught at the University of Maryland, and hold 3 US patents.