A representation of brain focus as a pattern of dots is displayed by the Prime application as the Neurable and HP Inc.'s HyperX collaboration brain-computer interface and gaming audio headset is demonstrated for neurofeedback to measure brainwave activity (EEG) and improve brain function during the annual Consumer Electronics Show (CES) in Las Vegas, Nevada on January 7, 2026. Beyond smart watches and rings, artificial intelligence is being used to make self-testing for major diseases more readily available, from headphones that detect early signs of Alzheimer's to an iris-scanning app that helps spot cancer. (Photo by Patrick T. Fallon / AFP via Getty Images)