The Android SDK provided by Google doesn't provide any camera emulation beyond a stand-in animation (see below). Since Google haven't yet provided a working implementation (or even a date by which one will be available), I'm publishing the source code for a set of temporary classes that I wrote to overcome this limitation. It's the first code I wrote on the Android platform, and it was written in haste, though it has functioned very well for me.
Moseycode is an experimental new barcode system for handheld devices. It provides an interactive bridge between the physical and digital worlds.