Have you looked at the videos on their
website? There's an adjustable cradle you set to take your basket, which holds the basket under a piston. You set a tamping pressure on the machine. When you put the basket in the cradle, it seems to activate a switch and the piston comes down and tamps to the pressure you've set, which is why it happens so quickly. You can't see it because the basket is up against the machine where the piston comes out, but it's visible when you clean the machine.
Presumably like everything else coffee related, it needs dialling in for your preferences, and then it gives consistent results. There's three dealers in the UK and several different models including a light capacity version for home use.