There’s a rumor that Microsoft is developing a new smart watch. Samsung and Apple are also supposedly working on similar devices. Microsoft is the only one with real experience in this area, as it shipped, sold and supported a smart watch for four years.

The company’s SPOT (Smart Personal Objects Technology) tech was used in watches from Fossil, Suunto, Tissot and Swatch. Tissot’s high-end model cost $800, and the SPOT service cost $59 annually. The watches were discontinued in 2008, and Microsoft continued to provide data to existing devices until January, 2012.

[Via @rolphus]