AI coaches are here to unleash your inner LeBron

A coach is indispensable to the serious athlete -- everyone from Olympians to up-and-coming youth athletes needs experts who can spot the strengths and weaknesses of an athlete's style and cater to their personal needs. But now AI systems are almost sophisticated enough to do the job just as well as -- better in some ways -- than the old human experts. HomeCourt, an iPhone app that basketball players can use to track their shots, might be the first of its kind. If the phone's camera is propped up and aimed at them while they practice, the app will track the position and success rate of each throw. As The Wall Street Journal reported, the free app offers users real-time feedback, complete with an automatically-spliced video recording of every single shot the athlete takes so they can check their form. At least, it does for 300 shots per month -- more than that, and a user is prompted to pay $8 for a subscription.