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-0628Baked! [mylodon, May 03 2022] Implementation details https://www.nature..../s41587-021-00950-3 [mylodon, May 03 2022] 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 random, halfbakery