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I wondered if someone would come up with something like this that would detect Covid. https://ktla.com/news/california/uc-san-diego-developing-wearable-mask-sensor-that-detects-coronavirus/
@BlueStateBabe I had not seen that. 🤔 Guess it wasn't effective.
@SPFX This reminds me of the bras that were supposed to be able to thermally detect breast cancer.