http://forums.w5j6stm77zs6652pgsij4awcjeel3eco7kvipheu6mtr623eyyehj4yd.onion/t/ubiquity-lvm-tpm/585
This way you could also stop adversary that is able to sniff your keystrokes (e.g. using hidden camera, or electromagnetic leak), and capture your disk decryption passphrase (see the discussion in the next section). Protection from an adversary that is sniffing full disk encryption passwords using cameras, doesn’t need require a TPM.