I'm used to explaining some acronyms, PRNG, HWRNG, TRNG ... but I hadn't encountered ZRNG, the "Zero Entropy RNG" until I read this article ... http://arstechnica.com/security/2015/05/crypto-flaws-in-blockchain-android-app-sent-bitcoins-to-the-wrong-address/ I would have said that there wasn't any money in this sort of thing, but it looks like there's at least US$8k ... -jim