Soft keys don't require any significant wire plumbing, the keys are less than an inch from the screen. And they've been used for decades in ATMs and gas pumps:

Soft keys don't require any significant wire plumbing, the keys are less than an inch from the screen. And they've been used for decades in ATMs and gas pumps: https://en.m.wikipedia.org/wiki/Soft_key https://en.m.wikipedia.org/wiki/Soft_key