SmartTrack uses patented technology to transmit video images from two pan, tilt and zoom cameras traveling along an aluminum rail mounted on the ceiling. The camera carriage travels at high speeds and provides unobstructed views of people, goods and processes. Systems will begin shipping in May with the entire contract completed before the end of September 2008.

The Mexico City Subway is 201 Km in length with 11 lines and 175 stations. It transports more than 1.4 billion passengers annually making it one of the world's largest subway systems.

"We are very pleased to win this prestigious international contract," said Peter L. Murdoch, president and CEO of Sentry Technology Corporation. "The public transportation market is a growth opportunity for Sentry. Smart Track is well suited to this sector and we expect that other business will follow from this success both in Mexico and in other countries where the company is soliciting business."