We love seeing with the wonderful tech here at CES 2014 and this is a particularly good one.
It's Sony's Tennis Sensor.
It's this adorable little sensor here you stick on the end of a tennis racket and it tells you everything you need to know about your playing performance.
Once you fasten this tiny sensor to the end of your racket, it communicates wirelessly via Bluetooth to a tablet.
Now, this thing has vibration and motion sensors in it and with that it can tell all kinds of data about your swing.
It knows the speed of your swing.
It knows the speed of the ball.
It knows the type of swing you're doing.
It even knows whereabouts on the racket the tennis ball hit.
It's a lot of fun to play with.
I can see this being a very cool gadget if you're an avid tennis fan.
Well, there's some bad news.
This is only a concept for now.
It's now going on sale any time soon.
Hopefully, Sony will put it on the market in the fairly near future though cause I think it's pretty cool.
I'm Luke Westaway for CNET here at CES 2014.
Check out CES@CNET.com <mailto:CES@CNET.com> for more.