Adaptive Touch quietly launches on the Google Pixel 9, works really well

Why? I've worked on over 1000 phones, and never have I seen a screen protector interfere with touch sensitivity. Not even if it was a redneck packing tape protector on a broken screen.

Now the wet fingers thing makes sense though, but is it really as effective as they claim?

What specific technical properties enable a display panel to detect touch more sensitively? Is it just software where even smaller touch input is registered?

The feature sounds interesting, but I haven’t had any problems with screen protectors so I don’t know if there is any advantage to it.