Glossary

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Sedentary Behaviour(also: Sedentary Lifestyle, Physical Inactivity)

Any waking behaviour characterised by low energy expenditure while in a sitting, reclining, or lying posture, such as prolonged sitting at a desk, watching television, or using a computer. Sedentary behaviour is a leading risk factor for preventable chronic diseases including…

Self-tracking(also: Quantified Self, Self-monitoring, Personal Informatics)

The practice of using technology — typically wearable devices like smartwatches and fitness trackers — to systematically record and monitor personal data about one's own behaviour, health, or activities. Self-tracking can help individuals, including older adults and people with…

SenseCam(also: Microsoft SenseCam, Vicon Revue)

A wearable digital camera originally developed by Microsoft Research that automatically captures photos throughout the day without requiring the wearer to actively take pictures. SenseCam is worn around the neck and uses sensors (light level, temperature, passive infrared for…

Skin Stretch(also: Tangential Skin Stretch)

A haptic feedback technique that conveys directional or magnitude information by laterally stretching the skin at the fingertip, palm, or other contact point rather than by vibration or kinesthetic force on a joint. Skin stretch engages slowly adapting tactile mechanoreceptors…

Smart Glasses(also: AR Glasses, Assistive Smart Glasses)

Smart glasses are head-mounted wearable devices that incorporate cameras, microphones, speakers, and computing capabilities into an eyeglass form factor. For people who are blind or have low vision, smart glasses can use computer vision and AI to provide real-time information…

Smart Ring(also: Ring-Form Wearable)

A wearable computing device worn on a finger, typically combining sensors (motion, biometric, or camera) and/or actuators (vibration, kinesthetic feedback) in a ring form factor. In accessibility, smart rings have been proposed as discreet input devices, vibrotactile navigation…

Smartglasses(also: Smart Glasses, AR Glasses, Connected Glasses)

Eyewear with integrated computing capabilities including sensors, displays, cameras, and connectivity that overlay digital information onto the wearer's field of view or provide hands-free access to computing functions. Smartglasses encompass several subcategories: passive…

Smartwatch(also: Smart Watch, Wrist-Worn Device)

A wrist-worn computing device with a small touchscreen display that provides notifications, health tracking, and app functionality beyond timekeeping. Smartwatches present significant accessibility challenges for users with motor impairments due to their small touch targets,…

Smartwatch Interaction(also: Watch-Based Interaction)

The methods and techniques used to interact with smartwatch devices, including touch gestures on the small screen, physical button and crown inputs, and motion-based gestures detected by onboard sensors. Smartwatches present unique interaction challenges due to their small form…

Subtle Interaction(also: Discreet interaction)

A design approach in which interactions with a device or digital system are intentionally minimized in visibility, amplitude, or audibility to reduce social disruption, preserve user privacy, and support use in public or semi-public contexts. Subtle interactions include…

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