“In some examples, an acoustic touch sensing system can be configured to be insensitive to contact on the device surface by water…”
This is a continuation of patents that date back to 2004, as suggested by an illustration of an iPod Classic in the patent filing.
The latest patent filing (via RedmondPie) that the U.S. Patent & Trademark Office granted Apple is centered around digital avatars. It mentions how an editing environment could let people create a “representation of their alter ego.” It sounds like Apple has bigger ideas though. Andrew Orr dives in and gives us his speculations.