Wrist-worn means designed to be worn on the wrist for convenient access during use. In security contexts, this usually refers to devices such as smartwatches, wearable authentication tokens, or custom controllers that keep an input or alert surface within immediate reach.
Wrist-worn devices matter in cyber security because convenience can also change the attack surface. If a wrist device pairs over Bluetooth, syncs with an app, or shows notifications, it may expose data, accept unwanted commands, or leak information on the screen. Physical theft is also a concern because a stolen wearable can sometimes be used to help bypass authentication or reveal session details. Defenders use wrist-worn gear for fast alerts, hands-free approval prompts, and operator workflow improvements, but they still need strong pairing, locking, firmware updates, and least-privilege access.