Here's another voice that says don't use technology to help with offside calls in soccer:

Technology — in the form of 3-D mapping grids and microchips inside shinpads — exists to make the offside call foolproof, but it's expensive and bloodless. Soccer should not become more like Tron.

The only short-term, obvious fix is a strong edict urging linesmen to start favouring attackers over defenders. That will liven up the game and punish stingy teams. Because, in the end, soccer needs more Barcelonas and Brazils and fewer ... well, let's leave that one a mystery as well.

The author also suggests dropping the rule altogether, which is something I favor (I think).