New Scientist is reporting on the development of "live stats" basketball uniforms. By using electroluminescent panels, the jerseys can display the number of fouls a player has, how many points they've shot, how much time is left in the game and how much time is left on the clock. The early tests (in Australia) have received very positive results, but there appears to still be some development left before production units can be made available for sale.
How long it takes one of these things to turn the players themselves into walking billboards I have no idea. Of course, race car drivers have been wearing uniforms that aren't much more than sewn-together sponsor patches for years, and their sports seem pretty healthy.