I want to use a ps4 controller on my ps3... In addition, I'm wondering of the “ps4 back button attachment”, where you can basically reroute buttons with a controller accessory would work.
Back Button Attachment For PS4 Controller Gaming Accessories Rear Extension Keys Paddles For Ps4 Gamepad
Sony - DualShock 4 Back Button Attachment | P.C. Richard & Son
Sony PS4 DUALSHOCK 4 Back Button Attachment | PlayStation 4 | GameStop
Sony's Back Button Attachment is finally back in stock, so here's our review | Ars Technica
Ps4 Back Button Attachment, PRO Controller Dualshock 4 Back Paddles Upgrade, AUS | eBay