So you enjoy playing table tennis against friends? You are going to need a decent ping pong table to get started. A decent ping pong robot can also help as it can prepare you for more challenging opponents. What else do you need? Maybe an Automatic Table Tennis Scorekeeper. This is a table tennis scorekeeping system that tallies points for you. It has a net and post set, an LED scoreboard, and a rail-mounted control unit. You also get two vibration sensors that attach underneath the table to do the tracking.
The system displays the score and verbally announces it. It also lets you know when it is time to change service. Just bring 4 AA batteries, and you are set.