Smart ring

A smart ring is a compact wearable electronic device that resembles a jewellery ring. They are often fitness and sleep trackers that wirelessly pair with a smartphone to transfer data. Many can also alert the wearer to smartphone push notifications. Some smart rings are used for near-field communication (NFC) applications such as contactless payment and access control, similarly to chip cards. Smart rings may include other sensors such as GPS trackers.

Smart rings can connect to smartphones or other devices, and some can operate independently, communicating with cloud computing systems or performing standalone tasks. Although many are displayless, they respond to contextual cues, such as gesture controls or proximity to NFC touchpoints, and can give haptic feedback.

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