My first impression for this game wasn't so smooth, because I didn't know how to move the monitor. Then I figured that out and I had a very joyful gameplay experience. Sometimes the pop-ups ruined my scanning and I find it a little unfair, but I think that's how the pop-up is supposed to be. After the game over I did replay the game a couple times, trying to reach the 10th customer, but the game is so hard.
Overall, the game is really good. I was a little addicted.