(2) I have purchased a few high-level encrypted USB drives, including two fingerprint USB drives. The seller claims that these encrypted USB drives cannot be cracked. Therefore, relatively weak passwords (~20 characters) can be used for the electronic files stored on these drives. Also, every encrypted file must have a password explanation.
I doubt security of such USB drive, especially since usually biometric usually only used as authentication (not encryption). And there's also possibility serious theft would just open the USB drive and take NAND/flash drive.
Storing partially unencrypted wallet data on a fingerprint-encrypted USB drive or writing it directly on paper doesn't make much difference. These fingerprint-encrypted USB drives are specifically designed for protecting corporate trade secrets, and I don't think they can be easily cracked.