offline bitcoin wallet
easily managing offline Bitcoin wallets using a computer that never touches the Internet. Everything needed to create transactions can be managed from an online computer with a watching only wallet. All secret private key data is available only on the offline computer. This greatly reduces the attack surface for an attacker attempting to steal bitcoins.By keeping all private-key data on the offline computer only someone with physical access to the offline computer can steal your Bitcoins. The actual process of creating a transaction and signing it with the offline computer can take less than a minute and then you can broadcast it to the network soBitcoin miners can include it in a block. Plus, Armory employs many security practices so that even if someone physically stole your offline system then it still may take centuries for them to get through the advanced wallet encryption.