Is it possible to operate on the same wallet from multiple devices? If I run, for example Android on a device, and Windows/Linux on another, how do I share the same private key(s) of my wallet between these device so I can send money from any of them?

Are the wallet files someway interoperable between clients? Is there a dedicated import/export tool?

I'm mainly interested in this client

2 Answers 2

  1. You can use online wallet, like StrongCoin, then it doesn't matter where you access it from.
  2. You need to use an Android client that allows for private key import/export. I'm not sure which Android client does this, but for Windows/Linux you either can look for some tools for altering the wallet.dat for the standard Client, or use an alternative client with import functionality (as far as I remember, MultiBit can do that, but I'm not 100% sure).
  • 1
    In the latest version of MultiBit you can import private keys in this format: github.com/jim618/multibit/wiki/… . If you can export your private keys from your Android client in the sipa wallet import format you should be able to import them into MultiBit.
    – jim618
    Feb 9, 2012 at 21:46
  • 1
    Note that the next release of the standard client will provide dumpprivkey and importprivkey RPC calls, so I can import and export private keys on the desktop wallet. If the wallet on my phone allows the same then I can manually keep them in sync. There's still the issue of 'change' addresses however; each time I make a spend, the change is sent back to a new address which I will need to sync to my other wallet(s). Feb 9, 2012 at 22:13
  • @ThePiachu Is it true that StrongCoin keeps some of your "transaction fees" for themselves when you send coins to other addresses?
    – Pacerier
    Jun 25, 2012 at 13:52
  • @Pacerier They charge a small amount on top of transaction fees.
    – ThePiachu
    Jun 25, 2012 at 14:57
  • @ThePiachu Are you aware how does it work? It states "A fee of 1% will be added to the amount you send. The minimum fee is 0.005 BTC and the maximum is 1 BTC." So if we send 1000 BTC how much is charged?
    – Pacerier
    Jun 25, 2012 at 19:23

BitcoinSpinner for Android phones allows you to export your private key in the Sipa format. This allows you to import it in any wallet service that supports Sipa formatted private keys.

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