Comment by jsz0

I think double-tap-to-zoom is a perfect example of something that should be patentable. It's a huge improvement over existing systems that often used a zoom box you would position with cursor keys. To work properly it has to take into account the major design elements on a web page and make intelligent choices based on the user's tap target. Web browsing before double-tap-to-zoom and multi-touch zoom was a nightmare. These two features reinvented web browsing on small displays. This was clearly one of the killer features of the original iPhone.