This was in news in the second week of July 2015 as Microsoft announced plans to introduce this technology in India to provide last mile connectivity and give a boost to the Digital India initiative. According to Microsoft, this technology can provide free Wi-Fi connectivity to the roughly one-billion Indians who don't have any net access.
What’s the name of this technology which comes from the fact that it uses the unused spectrum in frequencies?
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White-Fi Technology or TV White Space TechnologyIn technology parlance, these unused spectrum spaces are called White Spaces.