Sony's Smart Tennis Sensor has finally arrived in the US, Canada and the UK from Japan, and just in time for the perfect weather to start working on being the next Nadal. It's been a while since we saw it at CES 2014, though, so let's all refresh our memories: the sensor's a small circular device that fits into the bottom of a compatible racket's handle once you remove its logo cap. It can not only detect the swing type you use, but also the shot count, ball impact spot, ball spin and swing and ball speeds. Plus, the accompanying iOS or Android app can record videos and associate data with specific parts, so you'd know what you need to improve on.
It could be a pretty useful tool for anyone who takes their matches seriously -- or for those tired of getting almost nothing but "love" the whole game -- but the downside is that you might have to get a new racket if the ones you have aren't listed on the compatible models page. In the US and Canada, the sensor itself will cost you $200 and CA$250, respectively, and can be purchased from Sony's online or select Wilson brick-and-mortar stores. Unfortunately, Sony didn't reveal a price for the UK, where it can only be purchased from Wilson dealers.