Re:Researchers use tiny magnetic swirls to generate true ran...
by ncmncm on Wednesday February 09, 2022 @10:05PM
(#30281960)
A cellphone camera is, what, $5? Maybe you already have one. Or an audio input jack you can crank up the gain on. Maybe a radio transceiver, like for wifi or bluetooth?
All our gadgets already have sources for way more truly random bits than we could ever find a use for.
If you feel you really need to build something from scratch, resistor thermal noise is random. Likewise, diode shot noise. Total parts cost for either is well under $1. Combine them if you like; you are still well under $1.
All our gadgets already have sources for way more truly random bits than we could ever find a use for.
If you feel you really need to build something from scratch, resistor thermal noise is random. Likewise, diode shot noise. Total parts cost for either is well under $1. Combine them if you like; you are still well under $1.