If you look at the screen, you may be able to see the smudges from this pass code, and the angle of how they were punched in. For example, if there are smudges on the 5 and the 9, and there’s a light smudge that moves diagonally on the 9 away from the 5, then the 9 probably came after the 5. Tap out the numbers on a piece of paper with maybe some oil on your finger tips to get a sense of how your fingers move and the pattern they make, making sure to keep the same hand as your uncle.

Good luck, holding him in the light. <3