Sharper Sense develops single-use neurostimulation patches worn on the neck to enhance cognition and sensory processing. Its hands-free, maintenance-free patch uses a noninvasive electric field to stimulate cervical nerves, with research on the approach appearing in Nature Scientific Reports and other neuroscience publications. The company is applying the technology to situations where fatigue and distraction can increase human error, including military, sports, first-response and shift-work settings.