Story Related, cannot be missed.
After the prologue you will take control of a young Jodie in the chapter "The Experiment". After a short intro you will be prompted to play as Aiden to view the cards in the other room. Aiden can be activated by pressing Triangle.
This trophy, like every other one in the game, will only unlock once you complete the Chapter and proceed to the next one. For those looking to grab trophies using the Chapter Select option from the Main Menu, be aware that once you complete the trophy requirements, you can exit back to the Main a Menu where the Trophy will unlock. This saves you from having to play the entire chapter all the way through again.