Detailed walkthroughs for the N.O.O.S.E. Headquarters and FIB Building missions to get the hacking device for your Diamond Casin Heist.
Once you've chosen your hacker for the Diamond Casino Heist's Big Con approach, Silent & Sneaky approach or the Aggressive approach (ideally Paige Harris or Avi Schwartzman, as detailed in our Support Crew selection guide), you'll need to complete a prep mission to acquire their hacking device. This article provides step-by-step instructions for the two possible missions you might encounter: retrieving the device from either the N.O.O.S.E. Headquarters or the FIB Building.
When you are required to get the hacking device, it will be in either one of two different locations. The first location is N.O.O.S.E headquarters, while the second location is the FIB building.
N.O.O.S.E Headquarters Mission
For the N.O.O.S.E headquarters mission, you need to go to a specific location, find the corrupt agent, disable them and take the keycard to the N.O.O.S.E headquarters. When you get to the headquarters, sneak into the building and find the hacking device using your phone. It is pretty simple, just avoid the sight of the guards and walk silently and you should be good to go.