Wearable computers are not only limited to the computers such as fitness trackers, that are worn on wrists, they also includes wearables such as Heart pacemakers and other prosthetic. processing or recording data continuously. Many wearable computers are active all the time, e.g. Wearable computers have various technical issues common to other mobile computing, such as batteries, heat dissipation, software architectures, wireless and personal area networks, and data management. Devices carried in a pocket or bag – such as smartphones and before them pocket calculators and PDAs, may or may not be regarded as 'worn'. fitness trackers), hung from the neck (like a necklace), strapped to the arm or leg (smartphones when exercising), or on the head (as glasses or a helmet), though some have been located elsewhere (e.g. Wearables are typically worn on the wrist (e.g. It may be that specialized wearables will evolve into general all-in-one devices, as happened with the convergence of PDAs and mobile phones into smartphones. Under the definition of wearable computers, we also include novel user interfaces such as Google Glass, an optical head-mounted display controlled by gestures. They may incorporate special sensors such as accelerometers, heart rate monitors, or on the more advanced side, electrocardiogram (ECG) and blood oxygen saturation (SpO2) monitors. Alternatively they may be for specialized purposes such as fitness trackers. Wearables may be for general use, in which case they are just a particularly small example of mobile computing. The definition of 'wearable computer' may be narrow or broad, extending to smartphones or even ordinary wristwatches. Smartwatches, such as the Apple Watch, are an example of a wearable computer.Ī wearable computer, also known as a wearable or body-borne computer, is a computing device worn on the body.

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