Turn a spare phone into an offline crypto signer
Turn a spare phone into an offline transaction signer. BitTool Signer keeps keys on the offline device and exchanges signing requests and signatures by QR. Supports Bitcoin, EVM, Solana and TRON, with public source and a separate online companion.
BitTool Signer allows users to convert a spare Android phone into an offline cryptocurrency transaction signer, securely storing keys on the device. It supports multiple blockchains, including Bitcoin, EVM, Solana, and TRON, and facilitates signing via QR code exchange.
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