h a l f b a k e r y
Not so much a thought experiment as a single neuron misfire.
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Chrome and bakelite ATM, with a
chrome rotary dial to enter your PIN
like on an old-fashioned phone.
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||A savvy criminal could place a listening device near the ATM and deduce your PIN from the length of time it takes for the rotary dial to spin, then they could steal your purse away from the prying eyes of the security camera and go on a you-sponsored buying spree.
||Go really retro and do away with the dial all together. Just an ear piece and a mouth piece and an operator named "Ethyl" on the other end.
||Good point, [dintlu] - I think some
mechanism to randomise the
simulated dial-spinback time
[phoenix] Is that
some clever chemistry
forgot to add - numbers will be
displayed on those pop-up bits of
metal (painted white, with black
numerals) which you see on old
||[hippo] I guess you could just say "Hi, Tess"