The Short History of Pressure Sensitive Buttons - YouTube
Amazon.com: TOMSIN Metal Buttons for PS4 Controller Gen 1, Aluminum Metal Thumbsticks Analog Grip & Bullet Buttons & D-pad & L1 R1 L2 R2 Triggers (Blue) : Video Games
Using pressure-sensitive buttons without a compatible controller
Analysis - This is the fourth generation in a row Sony is trying to sell pressure sensitive buttons | NeoGAF
Amazon.com: Sony Wireless Controller for PlayStation 4 Black (3001538) DualShock 4 Wireless Magma Red Controller for PlayStation 4
Using pressure-sensitive buttons without a compatible controller
Playstation 4 Pro Custom Gaming Controller | Evil Controllers
Sony Wireless Controller for PlayStation 4 Black (3001538) DualShock 4 Wireless Green Camouflage Controller for PS4 : Video Games - Amazon.com
Amazon.com: TOMSIN Metal Buttons for PS4 Controller Gen 1, Aluminum Metal Thumbsticks Analog Grip & Bullet Buttons & D-pad & L1 R1 L2 R2 Triggers (Blue) : Video Games