SeedSigner
SeedSigner is an open source, air-gapped, Bitcoin seed phrase generation tool, and transaction signing device built on a Raspberry Pi and other over-the-counter hardware.
The goal of SeedSigner is to make it cheaper and easier to use multi-signature wallets for Bitcoin. SeedSigner makes it possible for anyone to build a device that can sign Bitcoin transactions without being connected to the internet. This can be done using inexpensive, publicly available hardware components that usually cost less than $150.
The key component in SeedSigner is a specific version of the Raspberry Pi Zero (1.3) computer that does not include WiFi or Bluetooth functionality. This ensures that your private keys never leave the device.
“Build a secure Bitcoin signing device for less than most hardware wallets. All software, specs, and designs are FOSS.”
– SeedSigner
SeedSigner Hardware
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