What is the significance of knowing the trigger take-up?

With regard to basic fundamentals, "slapping the trigger," or not taking up the “slack” of the trigger, is a common problem with all abilities of shooters. When this happens, a right-handed shooter will throw the shot to the left (nine o'clock). A normal training element is to teach students to "shoot off the reset," which means when the trigger is released back to the front after breaking the shot, the shooter does not completely take their finger off of the trigger, but rather allows it to move forward just enough to reset the sear before firing their next shot. Traditionally, it is difficult to see whether the student is prepping the trigger or not in live fire or traditional dry fire, which the SIRT Pistol makes readily apparent.

A second problem addressed by knowing when the trigger is prepped, as found in the extensive studies of professionals such as Dr. Lewinsky, is that individuals often improperly put their finger on the trigger in high stress situations, which can lead to accidental or unintentional discharges. There are a multitude of scenarios for when it is desirable to know whether the shooter is improperly prepping the trigger, particularly when training force-on-force.