Keys generated through physics.... or issues considered to be random in nature...e.g samples of light density or color makeup...etc... Utilizing physical characteristics.

Is that not what e.Digital does with physical ccharacteristics? e.Digital does not just simply scan for dead imperfections in semiconductors as 737 does...but, many types of varying imperfections that do not hinder the use of the semiconductor.

The cure of semiconductors is a randomness in nature. Can this randomness be cracked using mathematics?

That is what "Quantum cryptography"is supposed to be all about...the randomness of nature unable to be cracked using mathematics.

doni