Quickhacks are extremely useful tools in Cyberpunk 2077. They allow you to interact with the world around you, hacking it in various ways, and giving you lots of advantages in missions.
They can do everything from interfering with enemies by hacking their eyeballs, to pinging networks, showing you easy points to get access to systems. To actually use a Quickhack, you will need to have it loaded into your cyberdeck. You can upgrade your cyberdeck over the course of the game, getting access to more slots for your Quickhacks.
To access your Cyberdeck, open up your Inventory menu. In the bottom right of the screen, you will see a cyberdeck option. Click on that to bring up the cyberdeck menu.
Depending on the type of cyberdeck you have, you will see your mod slots on the left side. There should be two at the start of the game. Any additional Quickhacks you have will appear in the grid on the right. To place a Quickhack from this grid into the cyberdeck, simply double click on it. You will only be able to use Quickhacks that you have placed in mod slots, so if you are on a mission, don’t be afraid to open the menu and switch them out as you need them.
When your scanner is active, you can move the reticle over any object in the game, and a list of potential hacking options will pop up, based on the Quickhacks you have installed in mod slots. Highlight the option you want, and then hit the prompted execute button.
You can get more Quickhacks by purchasing them from stores, doing jobs for characters, finding them in loot, and finishing missions over the course of the game.