Oh, I forgot to one practical aspect; the way how the mnemonic is "mined" in Thomas proposal prevents usage in embedded devices, because difficulty of generating proper mnemonic is simply too high for embedded microcontrollers. Maybe this can be solved somehow by modifying the proposal, but right now it is a showstopper for us.

Marek

On Thu, Oct 31, 2013 at 12:11 PM, slush <slush@centrum.cz> wrote:

bip39:
+ bi-directional
+ passphrase protected
+ shorter mnemonic or shorter wordlist
- predefined wordlist

ThomasV proposal:
+ any software can has its own preferred worlist
? passphrase protected
- one-direction only
- longer mnemonic or longer wordlist