What? Why can't the change address simply be the paper wallet itself? Plus isn't this how Android Bitcoin Wallet works already, sending from it's main address, and sending all change right back to the same main address?

Please remove or re-label the "Disconnect" option, it is now clear that the function it implies is disingenuous

The app doesn't know you imported a key from a paper wallet. Most wallets will not replace keys but add to them. Hence the problem.

Once again, you can disable background connectivity if you are running ICS+ using a feature in the OS. By the way, Andreas doesn't work for Google and never did, so that's a pretty stupid comment.

It aids the comprehension of your insults (and the understanding of your character) if:

- they're addressed at the person you're quoting
- failing that, that they address the assertions of any comments that your name calling could possibly be attributed to
- failing that, that your stated solution to the pertaining comments is anything more than heaping inconvenience upon conceited and unnecessary cultural impositions. There is no good reason to follow these cultural dogmas

Your conduct sounds, well, pretty stupid in light of the above

Right, the difference is that Mycelium Wallet has explicit support for the paper wallet use case, so it knows how to manage keys appropriately. At the moment Bitcoin Wallet doesn't.

Probably the right way to support paper wallets in SPV clients is to have the app take you through the process of creating them, printing them out, etc. The app can then keep the public key on the device all the time so it's always synchronised. There's no "import" step and no need for rescanning. The app knows it's a paper wallet and can manage change appropriately. Android is now integrated with the "cloud print" thingy that Google is pushing so you could print a wallet directly from your tablet or phone. Or it can just create a PDF and let you print that however you want, both are easy. Or encode the key as words and you write them down by hand.

I think a part of doing this feature is also to separate out the "paper wallet as a backup" use case, from the "paper wallet as offline storage against malware protection" use case. The latter is less convincing to me than the former, because as Jan points out sufficiently well written malware can just wait until you want to access the money in your offline wallet. Support for Trezor is possible on phones and tablets - that's probably the better way to fight malware. Paper wallets then become a last-chance backup mechanism in case your online backups are destroyed or lost. You'd make a backup of your root key and can then import it if you lose your regular backups. Import doesn't have to be fast because losing your regular digital backups should be a rare occurrence.

Yeah, so use them as a bearer token effectively.

Raw private keys aren't a great way to do that. An actual wallet stored somewhere online is better. Then the qrcode can just contain a URL to the wallet. It could be encrypted and the password hidden under a scratch card if need be.

Armory has a "print-safe" system.  You write an additional (short) unlock key on the paper backup.

Thank you!

Somebody agrees with me!

I'm not the only one who thinks that this app running in the background, burning up data plan and battery, is not the best idea!

It's a great app, don't get me wrong on that, I just wish it would have a way of not running until it was time for the user to actually want to use it.

A single checkbox, that would be strictly obeyed by the app, would make all the difference:

[ ] Run in background

Uncheck this, and it would never run except when in the foreground.  No hooking the reboot event, to run then.  No hooking the charger connection event, to run then.  No running on a periodic timer, either.  Simply do not run at all, unless the app is in the foreground.  That's really it.  That's all we want.

Your words are effective.  I can't seem to communicate to the developers, they are deflecting my requests, and patronizing me by merely adding a link to the "Data Usage" settings screen.

Anyone know how to disable that sound the app makes when sending payments?