Unfortunately, TPM based Passkeys still are not a thing on Linux.
What would that be useful for? A properly implemented software passkey like Keepassxc would be secure against anything short of a local root exploit. A TPM would not really help against that either.
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What would that be useful for? A properly implemented software passkey like Keepassxc would be secure against anything short of a local root exploit. A TPM would not really help against that either.