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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.
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Moseycode is an experimental new barcode system for handheld devices. It provides an interactive bridge between the physical and digital worlds.