During the mission shown during Ubisoft’s E3 press conference, it was revealed that Watch Dogs 2 would allow players to perform Area Hacks. These hacks allow you to affect a specific area, rather than just individual people like you could in its predecessor. While you’re still able to hack just one person, Area Hacks allow you to distract large groups of people quickly so you can pass by undetected.
For example, in the Dedsec infiltration mission shown at E3, Marcus was seen sending a text to multiple people in a specific area in order to head down the road undetected. A quick and easy way to allow you to continue with your mission.