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A smart device is an electronic device, generally connected to other devices or networks via different wireless protocols such as Bluetooth, NFC, WiFi, 3G, etc., that can operate to some extent interactively and autonomously. Several notable types of smart devices are smartphones, phablets and tablets, smartwatches, smart bands and smart key chains. The term can also refer to a ubiquitous computing device: a device that exhibits some properties of ubiquitous computing including–although not necessarily–artificial intelligence. Smart devices can be designed to support a variety of form factors, a range of properties pertaining to ubiquitous computing and to be used in three main system environments: physical world, human-centered environments and distributed computing environments. == Form factors== In 1991 Mark Weiser proposed three basic forms for ubiquitous system devices: tabs, pads and boards. * ''Tabs'': accompanied or wearable centimetre sized devices, e.g., smartphones, smart cards * ''Pads'': hand-held decimetre-sized devices, e.g., laptops * ''Boards'': meter sized interactive display devices, e.g., horizontal surface computers and vertical smart boards. These three forms proposed by Weiser are characterised by being macro-sized, having a planar form and by incorporating visual output displays. These were also envisioned more as information appliances. If we relax each of these three characteristics we can expand this range into a much more diverse and potentially more useful range of Ubiquitous Computing devices. Hence, three additional forms for ubiquitous systems have been proposed:.〔 〕 * ''Dust'': miniaturised devices without direct HCI interfaces, e.g., Micro Electro-Mechanical Systems (MEMS), ranging from nanometres through micrometers to millimetres. See also: Smart dust. * ''Skin'': fabrics based upon light emitting and conductive polymers and organic computer devices. These can be formed into more flexible non-planar display surfaces and products such as clothes and curtains, see OLED display. MEMS devices can also be painted onto various surfaces so that a variety of physical world structures can act as networked surfaces of MEMS. * ''Clay'': ensembles of MEMS can be formed into arbitrary three-dimensional shapes, as artefacts resembling different kinds of physical object. See also: Tangible interface. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「smart device」の詳細全文を読む スポンサード リンク
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