Existing products / solutions
Metronome, fitness tracker, swimming (biking, running, etc) tempo trainer, sleep cycle monitor; Marathon pacer, personal coach, music tutor, etc.
The human brain is not trustable for rhythm/tempo/time perception. Our blood pressure, mood, brain activities and a lot more other factors can easily change the perception of rhythm; Human tutoring cost time, money. It is emotional, and not accurate as machine; Machines or products are accurate but lack of a perception, analysis, and feedback system comparing to human being; Fitness trackers are lack of simultaneously feedbacks during body movements.
To build a wearable AI system that combines the accuracy of machine and the methodology, detection/feedback system of human being. It detects and send multi sensory feedbacks to users simultaneously during body movements.