In a tweet sent out early this morning by Jonas Schnelli who is a Bitcoin Core developer and also is the co-founder of Bitcoin hardware wallet Digital Bitbox, he said that the hardware wallet has officially gone on sale.
— Jonas Schnelli (@_jonasschnelli_) March 25, 2016
In the tweet Schnelli says that the hardware wallet is the first to support libsecp256k1, and that it has a flexible API and full native app.
The hardware device allows for offline transaction signing, offline and anytime backups to a micro SD card, AES-encrypted USB communication, and 2FA support. Users have full control over their private keys; and the wallet is multisig compatible.
The hardware wallet market has been growing steadily, with a considerable amount of hardware devices that have been released such as Trezor, Case, KeepKey, BitLox, and a few others.