I believe we are heading towards personal safety bubbles, where dangerous molecular detection and warning is done in realtime via smartphone or other personal d

I believe we are heading towards personal safety bubbles, where dangerous molecular detection and warning is done in realtime via smartphone or other personal device such as glasses or implant. It might take awhile coming, but that seems the natural conclusion to having supercomputers available for individuals. Would the detection be possible via advanced mmwave/field detection, or would it have to have a molecular mini lab system of some sort ala pcr? Great market opportunity here. This seems inevitable because the rise of various threats is also inevitable via technology, and us humans like to be safe.