A Bitcoin wallet designed from the ground up to give users the best of both worlds — it focuses first on maximizing security, and then provides a well thought-out interface to make using this security as simple as possible. Many users regard it as the only way for those with a significant investment in Bitcoin to use and protect their funds. Beyond security and usability, Armory simply implements more features than any other Bitcoin client available. It includes Armory’s signature interface for offline wallets (also known as, “cold storage”), multi-signature transactions, simulfunding (escrow), one-time printable backups, multiple wallets interface, GPU-resistant wallet encryption, key importing, key sweeping, message signing, and more.