College student Peter Byrne has cerebral palsy, and as a result has been having problems with his new DualShock 4 controller. Or, was having problems, until a PlayStation employee got him sorted out.
Byrne wrote to Sony to explain an issue he was having, where his left hand was constantly brushing against the DS4's touchpad, which would inadvertently pause games he was playing.
Within days, Sony's Alex Nawabi, a member of PlayStation's Research & Development team, had sent Byrne a package: a specially modified DualShock 4, featuring adisabled touchpad. To replace that functionality, he'd installed a new, extra "pause" button.
Note that this wasn't an official PlayStation project; Nawabi was just helping the guy out in his spare time.
You can see video of the controller in this News12 article.