Co-Signing Trophy in Marvel's Spider-Man 2

The Tech Stashes are the Prowler Stashes on the map, hidden by Miles's uncle Aaron, the former Prowler. Only Miles can open them. The first comes with the story in main quest 6, Amends. At each, hold L2 to scan the building for the hidden way in, then pull or power what it shows. The tenth, in Harlem, appears a minute or two after the ninth. It sends you home to Miles's apartment: press by the TV, then go up the stairs.