I wrote a feature in my Casascius Bitcoin Address utility that allows m-of-n private keys, similar in concept to the one Vitalik Buterin wrote.
I'm running the latest version of your Bitcoin Address Utility from github, and am unable to find the m-of-n functionality. Please could you let me know whether you've pushed this feature to master on github, and, if so, give me a hint on how to do it.
I'm currently trying to get sorted with a 2-of-3 scheme for my long term holdings.
Thanks.