Using various embodiments, methods, systems, and apparatuses are disclosed for data collection from a subject using a sensor apparatus. In one embodiment, an apparatus for use by a subject, the sensor apparatus is disclosed, comprising a sensor configured to capture and transmit data related to movements by the subject and a computing device coupled to the sensor to receive sensor data transmitted by the sensor, save the data in a track in a data file. The data file can have a plurality of tracks, each track saving data of a different sensor. The data thus saved can then be processed by another computing device.