Watch Dogs -
With that done, use the phone in here to attract a guard. The guard right outside has a camera on him, so jump to that camera as he walks into the room. Quickly find the box in a corner and hack it. One done, now the harder one. This one is on the opposite side of the complex, and a little trickier. Get so that you're hacked into a security camera up above this alley to the left of the main gate. Use the shutters to start luring the security guard with a camera out of his spot, then hop into his camera. Once he's moving, use the phone on the ground to attract him over to the open gate door. Once in view of the hackable box, you know what to do.