Check4-COVID, by IdentifySensors Biologics, is intended to be a fast, accurate saliva self-test for COVID-19. Results are displayed within minutes on a smartphone app. Check4-COVID is an electronic-based COVID self-test that is faster and less expensive than chemical-based tests. Electronic signals are sent to smartphones to display results in minutes. The chemical-based tests currently in use require laboratory technicians, delays, additional resources and higher costs. The Check4-COVID reusable reader is intended to cost about $130. Each COVID test cartridge is intended to cost less than $25. Users never leave their home. No prescriptions, no mailing samples and no waiting for laboratory results. With this new technology in place, it allows for having access to faster, more accurate test results in the comfort of your own home.