this will work if the tech is sufficiently innovative, and is difficult to implement, and is not at all obvious that such piece of tech is the solution to such a problem.

However, some of the patents i've seen being battled out in court is about the _shape_ of a phone. Rounded corners. Swipe, pinch to zoom, and bounce when reached the end of a list.

These things are not worthy of being patented, and none of them are non-obvious enough to be called innovative. it is at these patents that ruin the system.