A shoulder pack that has sensors that provide a comprehensive sign that the wearer is coming down with (lurgy of the month/decade/whatever).
The pack makes a klaxon sound, shoots out small rockets and meshes with the local WiFi network.
Free joo janta specs only this month!!!-- not_morrison_rm, Mar 06 2020 Alternatively, the device could play a recording of Wallace Greenslade declaiming "Unclean ! Unclean ! OoooOOOOooooooh ! " in funerial tones.-- 8th of 7, Mar 06 2020 )-- MaxwellBuchanan, Mar 06 2020 random, halfbakery