Meet Blast Baseball: a smart motion sensor that helps you monitor your practice sessions, compare your results, and improve your skills. The sensor attaches to any bat and uses Bluetooth to communicate with your smartphone or tablet. The sensor knows when you are moving to capture 3D action metrics in real-time.
The device can be used to capture video and track swings in real-time. You will be able to compare results and share your highlights with your friends. Even when your phone is not around, the sensor can record your data for later sync. More information is available here.