What is the most secure seed for random number generation?

Question

What are the most secure sources of entropy to seed a random number generator? This question is language and platform independent and applies to any machine on a network.

Answer 1

You can earn random numbers generated by radioactive decay. Sounds a little strange at first, but you get real random numbers out of this.

Radioactive Decay

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Answer 2

Write an Internet radio client, use a random sample from the broadcast. Have a pool of several stations to choose from and/or fall back to.