Sensing with Earables

Earables have emerged as a unique platform for ubiquitous computing by augmenting ear-worn devices with state-of-the-art sensing. This new has spurred wealth of research exploring what can be detected on wearable, small form factor. As sensing platform, the ears are less susceptible to motion artifacts and located in close proximity number important anatomical structures including brain, blood vessels, facial muscles which reveal information. They easily reached hands ear canal itself is affected mouth, face, head movements. We conducted systematic literature review 271 earable publications from ACM IEEE libraries. These were synthesized into an open-ended taxonomy 47 different phenomena that sensed in, on, or around ear. Through analysis, we identify 13 fundamental all other derived, discuss sensors principles used detect them. comprehensively four main areas (i) physiological monitoring health, (ii) movement activity, (iii) interaction, (iv) authentication identification. breadth highlights potential earables offer ubiquitous, general-purpose platform.