Turnstile Walk through Gates PD 6500i is an industry leader with superior pinpoint technology and unmatched discrimination features. This detector has proven its e ectiveness at moving high volumes of patrons through such events such as the Olympic Games, World Cup 2010 South Africa,and the Pan-American Games in Mexico. The PD 6500i has also been trusted to safeguard international airports, hotels, government buildings, and correctional facilities. With its advanced networking and ability to pinpoint targets in 33 detection zones, the PD 6500i is the walk-through of choice for security professionals worldwide.