I need to do more research to see if this is possible, but it'd be awesome if the Windows app supported using a YubiKey as a key store for the master password (or use a derived key) to unlock my vault. While the threat model is a bit esoteric, it would prevent a key logger from extracting my master password (albeit if there's a keylogger installed, they can just fetch the root secret out of memory, but that takes a little more know-how).
1. Is it even worth using the YubiKey for this?
2. Would the number of people using this even make the feature worthwhile to develop and test?
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