Idea is good, but hard to implement due to you must refer to / benchmark to expert standard. The presentation failed to demonstrate the completeness of the implementation.

Existing product in the market available to measure exercise gesture. Also many wearable products, which has the potential to add similar features. It would be better to make sure phone's censor, rather than a separate device. If a separate device is used, consider bluetooth, instead of wifi.

Good idea, let us know your market segment

Good wear tech for kungfu!!