I couldn't see anything on their site. It's a little bit puzzling how a $15-17k LM does not have that function. But then there's a ton of function the $300 PRGR does not have that the GC does.Not current quad, but the announced GC Quad Max will be able to track speed without hitting a ball.
QuadMAX
Meet the QuadMAX™ — the newest and most powerful iteration of our award-winning launch monitor technology. Built on the same advanced four-camera photometric data capture system found in its predecessor, the QuadMAX™ is an efficient performance-analysis workhorse.www.foresightsports.com
PRGR works just fine for Stack training and basic range work. for me