ChronoTrack Systems Inc. announced that the company’s race timing system, based on Impinj UHF Gen 2 radio frequency identification (RFID) technology, performed flawlessly at the inaugural running of the Seattle Rock & Roll Marathon on June 27. The sold-out event saw over 25,000 participants and featured both a half and full marathon that utilized the RFID-based system to record runners’ times at more than 18 points along the course. At each timing point, Impinj Speedway readers and Th...