While I can't speak to the legal or political implications of the product or supporting infrastructure, I'm thrilled with the idea of a mobile application that provides for the exchange of "currency" in an autonomous manner.<p>The exchange of value outside of the established models (Gov't issued currency / PayPal / Google Checkout / next iteration thereof) has the potential to provide a huge opportunity for those of us involved in the space of online media and web applications.<p>Mobile implementations to bring the utility of the Bitcoin project into the palm of the hand bridge an intimidating virtual-to-real gap for many potential users.<p>In my opinion, the development of this mobile application, as well as similar projects, is a first step towards the more widespread adoption of the Bitcoin currency, in whatever (hopefully at least semi-legal, and legitimate) form it may finally take.<p>I'll observe with great interest.
I like the server-client model more, for example BitPay which uses instawallet.org (<a href="http://forum.bitcoin.org/index.php?topic=24452.0" rel="nofollow">http://forum.bitcoin.org/index.php?topic=24452.0</a>).<p>There is also mtgox vouchers-app: <a href="http://forum.bitcoin.org/index.php?topic=25307.0" rel="nofollow">http://forum.bitcoin.org/index.php?topic=25307.0</a><p>These apps use QR codes, but I think the way to go is NFC communication.<p>The benefit is instant transactions with server-client model, but on the downside you have to rely on 3rd party. I think it isn't that big downside, since you have always handed your money to 3rd party before bitcoin...
Can you tell us where exactly the wallet.dat file and the block chain are stored on the android? I sent 0.01BTC to my phone a while ago, and it has yet to show up (so I'd like to grab the wallet.dat for backup), and it's showing a swirling circle at the top, meaning it's still downloading, and I'd like to check if it's actually doing anything (file size increasing?)