So far the first satellite that was launched in September half a decade ago obtained full operational status in 2013, where the entire system has now been expanded to include four satellites rather than just three as originally intended. Mitsubishi is the one behind all three satellites, where they are slated for launch before 2017 is over.
QZSS would come in handy where mobile applications are concerned, as it is able to deliver communications-based services such as video, audio, and data, in addition to a more accurate positioning information, of course – down to the centimeter it seems. You can be sure that as the entire QZSS becomes fully operational, things will get very, very interesting on the ground for civilians if the apps are creative enough to take advantage of the newfound accuracy.