Are there wristbands for detecting a gesture using a magnet?

Question

Electronics

Is it possible to make or eat some kind of bracelet (with a hall sensor or something else) to catch the positions of the fingers and hand? without hanging anything on the fingers themselves. To determine the gesture/position of the fingers?
I saw some project where a muscle bracelet determines - not that.
A project where a device with the size of a USB hub is placed on the table and it also catches movements - not that.

Answer 1

If you don’t hang anything on your fingers, then either monitor muscle tone or look at the hand with a video camera and analyze the image in the spirit of kinekt and others.
The hall sensor responds to a magnetic field. Ok, with its help you may be able to determine the position of the bracelet in space, but no more, since your fingers are not magnetic. Although, if you have iron pins in your bones - why not?

Answer 2

Kinect: an example for MatLab .