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Pacifica supports hardware wallet signature authentication via Ed25519 off-chain message signing. To use hardware wallet, after constructing the message bytes, prepend it with the \xffsolana offchain header together with message length, version information, etc. Then, in the signature to send, use hardware as the type : 
...
"signature": {
      "type": "hardware",
      "value": "2V4Y7Mpk...",
},
...
For more details, refer to this example in the Python SDK.