h a l f b a k e r yQuis custodiet the custard?
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OK, how does it change colour? |
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A nurse secretly tests you when you are not looking, and then colours in the mask with a permanent marker pen if the result is positive. That would work. |
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Amazing idea if you can make it work. |
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It just needs built in swabs |
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Innovative[+] but it needs to be fleshed out to be more than magic [-] |
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[pertinax] apparently all you have to do is to use an
'lac-galactosidase operon as the circuit
output to
hydrolyze chlorophenol red; D-galactopyranoside' |
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Not sure if they tried this on madks, though... |
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