Kin was a line of mobile phones that was briefly marketed by Microsoft in 2010. Aimed at people between ages 15 and 30, they were designed for social networking. Microsoft invested two years and about US$1 billion developing the Kin platform, beginning with its acquisition of Danger Incorporated, creators of the Hiptop or T-Mobile Sidekick. The Kin ran an operating system based on Windows CE. They were manufactured by Sharp Corporation and sold through Verizon Wireless.