It is important to be scientific about the context. There are already cheap, fast, accurate tests for COVID-19 related antibodies. This test is comparable to

It is important to be scientific about the context. There are already cheap, fast, accurate tests for COVID-19 related antibodies. This test is comparable to other antibody tests and not to the PCR tests which are fundamentally more complex and slow while also being better at detective active infection. Probably the current biggest competitor would be the Abbot Labs antibody test, so this is really going to come down to cost, availability, and just how much the speed matters. Little differences can really add up when doing population scale testing, but waiting a few minutes might not necessarily be different enough from nearly instant to be worth additional cost. It will be really interesting to see if production of transistor based sensors can keep up with chemical antibody test production.