The PlayStation 4's touchpad and the law of unintended consequences - The Verge
Amazon.com: Agelkvoy Wireless Controller for PS-4, Remote Game Controller Built-in 6-Axis Sensor/Dual Shock/Touchpad/3.5mm Headphone Jack - Wireless Pro Controller for PS-4 Gamepad Compatible for PS-4 /Slim/Pro/PC : Video Games
Is the PS4 Touchpad a Gimmick? - YouTube
Touchpad Board Touch Pad Module for Playstation4 Controllers JDS-030 - Walmart.com
Ipega 4020A Bluetooth Game Controller Touchpad Wireless Gamepad Joystick for Playstation 4 PS4 PS3 MFi Games iOS Android Phone - AliExpress
God Of War Kratos PS4 Playstation 4 Controller TOUCHPAD Vinyl Decal/ Sticker | eBay
Personalized Playstation 4 PS4 Controller Custom Touchpad Full Color Decal Removable Reuseable Touchpad Decal Sticker - Etsy