PDA
The PDA (Personal Digital Assistant) currently works mainly as the player's inventory, which includes a storage holding 48 item slots on the left and a Paperdoll UI with equipment slots on the right. By changing tabs, it is also possible to view all blueprints the player has unlocked so far.
By default, the player can access the PDA by pressing the TAB key.
According to the developers (chat on Hipchat), it will be possible in future builds to take pictures with the PDA. These pictures can then be used to fill the picture frames, which have yet to be implemented.