There is no triviality test for patents. If its new its patentable - witness the doubleclick patent.

As some of the comments here point out, there are interesting specifics to the patent: It is specifically about using simple input devices in simple equipment and using input timing patterns as meaningful input. That's an actual interface that you need to carefully develop - but it's still a problem that patents are issued with very broad characterizations of the invention and consequently overly broad applicability.