Providing services ranging from sensor-driven thermostats to bracelets that can track how you sleep or eat, hundreds of venture-backed companies are now part of a category known as the Internet of Things (IoT).  The Internet of Things describes technologies that connect to the Internet and to each other through sensors, wireless networks as well as other “machine to machine” methods. Given the Internet of Things theme covers a broad array of technologies and use cases, it is actually comprised of five key sub-categories as detailed below (with illustrative companies provided for each)

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