Half a croissant, on a plate, with a sign in front of it saying '50c'
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COVID test Mask
  (+2, -1)
(+2, -1)
  [vote for,

Combining an N95 mask with a COVID test. The mask changes color if it determines you are exhaling virus.
mzellers, May 02 2022

https://ucsdnews.uc...er-against-covid-19 color-changing test strip that can be stuck on a mask and used to detect SARS-CoV-2 in a user’s breath or saliva [a1, May 02 2022]

MIT face mask sensors https://news.mit.ed...d-19-detection-0628
Baked! [mylodon, May 03 2022]

Implementation details https://www.nature..../s41587-021-00950-3
[mylodon, May 03 2022]

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       OK, how does it change colour?
pertinax, May 02 2022

       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.
pocmloc, May 02 2022

       Amazing idea if you can make it work.
doctorremulac3, May 02 2022

       It just needs built in swabs
mylodon, May 02 2022

       Innovative[+] but it needs to be fleshed out to be more than magic [-]
Voice, May 02 2022

       [pertinax] apparently all you have to do is to use an 'lac-galactosidase operon as the circuit output to hydrolyze chlorophenol red; D-galactopyranoside'   

       Not sure if they tried this on madks, though...
mylodon, May 03 2022


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