For questions about the history of programming and computing.

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Why did Shannon's outguessing machine beat Hagelbarger's?

I'm reading "Rock Breaks Scissors", which describes two "outguessing machines" built at Bell Labs that try to exploit human non-randomness in the game of matching pennies. There was an outguessing ...
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Who invented the otpauth:// URI scheme?

It seems really simple, but who invented the commonly-used otpauth:// scheme (used by Google Authenticator and other TOTP soft tokens by scanning QR codes)? When?