[clairity]

my impression, from having talked with people who analyze the data from sportVU, is that the raw data is fairly useless and most of the useful data crunching happens overnight after each game.

with that said, bluetooth beacons, along with 3 bluetooth receivers for triangulation, could be used for inexpensive player tracking, but the data would be noisy and not as accurate (probably ~1 ft resolution or so). i've actually been wanting to put such a system together to determine how good it might be.