Sony's adding back buttons to the PS4 controller via this official attachment
WREA PS4 Buttons PS4 Handle Extension Button Trigger Extenders Game Pad Playstation 4 PS4 PS4 Slim Pro Game Controller Accessories Handle Key Set Extension Trigger - Walmart.com
No, PlayStation. The 'X' button is not actually the 'Cross' button. | Mashable
Street Fighter 5 guide: controls - Polygon
Sony Ps4 Dualshock Back Button Attachment | Ps4 Controller Back Button Attachment - Accessories - Aliexpress
PS5 & PS4 accessories | Official PlayStation controllers, headsets, cameras and more
Perspective Control Scheme. A mix of all prior games. This would allow for more powers at once, where SS and FL felt alittle stilted. FL less than SS tho. This just feels
Understanding Button and Joystick Names on EXP Controller – VEX Library
How to Connect a PS4 DualShock 4 Controller to a PC | PCMag
Windfall 2Pcs R2 L2 Dual Trigger Extender Extra Longer Button for PS4 Controller Gamepad - Walmart.com
Multi-colors Luminated LED Kit for PS4 Controller | eBay
Where is R3 on PS4 Controller? Learn where to find the L3 & R3 buttons | Gaming
22 colors Wireless Gamepad for Sony PS4 Controller Fit Wireless Joystick Console For Playstation4/PC Dualshock 4 Gamepad For PS3 - AliExpress Consumer Electronics
Amazon.com: Controller Paddles Multifunction Ergonomic 10 Key Mappings Back Button Attachment for PS4 Controller : Video Games