> I'd say that this isn't often done simply because computers didn't typically have a lot of sensors until recently I thought it was done a lot, for example,

> I'd say that this isn't often done simply because computers didn't typically have a lot of sensors until recently I thought it was done a lot, for example, in the Linux kernel: "The random number generator gathers environmental noise from device drivers and other sources into an entropy pool." [1] [1] http://man7.org/linux/man-pages/man4/random.4.html http://man7.org/linux/man-pages/man4/random.4.html