As the NFL begins its 106th regular season tonight when the Eagles host the Cowboys , the league will also debut its virtual measurement system in the regular season for the first time ever .

After years of tinkering with it in the background and preseason, millions of dollars spent and 180 cameras installed across 30 different American stadiums (plus even more internationally), the NFL is finally ready to flash its new technology in games that matter.

But sources across the league have indicated to CBS Sports that they will be watching tonight and the rest of Week 1 with bated breath after some uneven test results. The new system that has rendered the chain gang as the backup for line-to-gain measurement is supposed to cut down on dead time during games when everything works t

See Full Page