The trackpad is really funny to me. In a world where executives were quaking in their boots that mobile games were going to supercede traditional console games, it felt like a bit of a desperate bid to rope angry birds players to the PlayStation. There was a fair bit of buzz when this thing was announced, with people speculating how devs could make the most of the input device but I feel like that never came to fruition.
I can only think of two notable instances of touchpad use in any games I played. InFamous Second Son had a very rudimentary mini game where you dragged your finger on a scanner. The Witcher 3 did something I quite liked where different swipes on the trackpad opened different menus. This should've been a standard feature in every game.
Aside from that... not much hey? I would've loved if you could use it to scrub through the a playbar on YouTube at least. #games