Playing pool online is easier than the real pool. Normally, all online pool games are with the indicator showing the direction of the balls. Luis Sousa, Ricardo Alves, and J.M.F Rodrigues of University of the Algarve, Portugal invented the 'PoolLiveAid', a laser guided snooker project capable of ball, cue and tables detection, for easy learning and move prediction. Camera mounted on the stick the sensor calculates the position of the ball and the trajectory with a projector and draw it on the green cloth. And it is also able to predict the effect of rebound of another ball. So it is all too easy, like a video game but a real pool, just enough to have a little 'steady hand. The rest is done by the 'tracker' laser.