Wearable motion tracking system

A method for tracking a relative position between a first body part of a user and a second body part of said user, said method comprising:

• using at least one first measurement device attachable said first body part, at least one second measurement device attachable to said second body part and a computing device, and executing an application on said computing device in order
• i) to perform a plurality of first measurements between said first measurement device and said second measurement device so as to obtain measurement data of measurements between the first measurement device and the second measurement device, wherein said plurality of first measurements between said first measurement device and said second measurement device comprises at least one distance measurement between said first measurement device and said second measurement device;
• and
• ii) to compute, in three dimensions, a first position of said second measurement device relative to said first measurement device using said plurality of first measurements;
• iii) to perform one or more pluralities of subsequent measurements between said first measurement device and said second measurement device so as to obtain measurement data of measurements between the first measurement device and the second measurement device, wherein said plurality of first measurements between said first measurement device and said second measurement device comprises at least one distance measurement between said first measurement device and said second measurement device;
• and
• iv) to compute, in three dimensions, one or more subsequent positions of said second measurement device relative to said first measurement device using said one or more pluralities of subsequent measurements for tracking said position of said second body part relative to said first body part.

A wearable motion tracking system for capturing a relative position between a first body part of a user and a second body part of said user, said wearable motion tracking system comprising:

• at least one first measurement device attachable to said first body part;
• at least one second measurement device attachable to said second body part;
• and
• a computing device;
• wherein said at least one first measurement device and said at least one second measurement device are configured to perform a plurality of measurements between said first measurement device and said second measurement device so as to obtain measurement data of measurements between the first measurement device and the second measurement device, and
• wherein said computing device is configured such as to obtain by said computing device said plurality of measurements between said first measurement device and said second measurement device, wherein said plurality of measurements between said first measurement device and said second measurement device comprises at least one distance measurement between said first measurement device and said second measurement device;
• wherein said computing device is configured to compute, in three dimensions, a position of said second measurement device relative to said first measurement device using said plurality of measurements for tracking the position of said second body part relative to said first body part;
• and
• wherein said plurality of measurements between said first measurement device and said second measurement device comprises at least one direction measurement between said first measurement device and said second measurement device.