The major differences between IDEEA and other commercial devices

	No other commercial device can identify more than 3 types of activities, while IDEEA can identify and differentiate more than 40 types of activities, including most daily physical activities that are important for obesity, rehabilitation, osteoporosis, and many other studies.
	All other commercial devices tell you the vibration sensed by the sensor(s) attached to the part of body. Thus a child's waving hand can generate more signals than an adult climbing stairs, which is not correct in terms of energy expenditure or exercise level. IDEEA uses advanced algorithms such as artificial intelligence and neural network that integrates signals from multiple sensors of different body parts to derive intelligently the exact type of activity the person is performing (sitting, standing, jumping, stair climbing/descending...) with the highest possible accuracy (a study by Dr. Pi-Sunyer’s group from Columbia University showed average accuracy > 98.5% for 76 subjects studied).
	The results such as power, mechanical work, and energy expenditure estimates were calibrated by the most accurate whole-room calorimeters and the largest precision force platform, and validated on hundreds of tests in multiple clinical studies, thus has much higher accuracy and accountability.
	IDEEA measures and records millions of data points so that every slight movement or activity is recorded and saved for later use. While other devices only record an average of vibrations for a given period (say, on 1-minute intervals).
	IDEEA is designed from ground-up by researchers conducting clinical studies. It presents the information a researcher needs, such as the type of physical activity, it’s onset, duration, frequency, intensity (e.g., speed of walking or running), mechanical power generated, and related energy cost. Others output a number or a few numbers in a given time period that basically tells the level of sensor vibration.
	Perhaps the most important difference is that the software that comes with IDEEA enables you to play back the animation of what actually happened for the subject (e.g., At exactly what time a subject fell on the ground? What was the last supporting leg before falling? And many more) at any given time. The playback speed can be changed from 1:1 to 1:60 to speed up viewing. Graphs, charts, tables, and statistics are designed for scientific view and can be shown for any selected time period dynamically, printed out, or saved to a database of your own...