So they just place a dot on target?
Well....yes and no. If you are familiar with normal firearms lasers, the turn on and project a dot type, then no.
The laser pistol - usually an upper assembly that fits an otherwise normal .22 match pistol - emits a laser pulse for a millisecond or so when the trigger is pulled. The target system detects the laser pulse and where it hits the target and records the score. Very precise.
As to the Olympics deserting shooting......can't tell the future but it is a fact that more countries participate in Olympic shooting than in any other sport. We just don't get the coverage here. Kind of a great irony....the country with the most firearms has the least amount of exposure to the different shooting venues in the Olympics (and other arenas). One of my personal favorite sports to watch is Winter Biathlon......how often do you see that on TV?