Love the idea, and love that they're using biometric so the enemy can't easily take one and see the locations of all his "buddies". Why limit it to a handheld though? Look at all the video games & movies...where does the screen exist? On your helmet in some sort of transparent, interactive HUD that you manipulate with your eye & where you're looking. Apache pilots have been using this for years. I'm excited to see that we're one step closer to catching up with the technology of sci-fi movies & games, but to make it a handheld device...meh.

Anyway, would be interesting to see how they handle security of the network. I imagine that would be the target since hacking that network would give them precise locations of all "buddies" in the combat zone. Probably some pretty incredible tech used to secure that network...