Microsoft originally unveiled its interactive NUads almost a year ago and the company now says it will begin rolling them out in "late spring." NUads take advantage of the Kinect sensor to let viewers interact with adverts or launch them from the Xbox 360 dashboard. The design goal is to get users to interact with the advert at their own discretion by saying "Xbox share" to post an update about the advert to a social network like Facebook or to control other aspects of the advert. A typical use case could involve a viewer sharing an advert to identify the song or performer involved. NUads will also be available on Windows PCs thanks to the Kinect for Windows hardware and SDK.
Some early implementations of NUads-style technology can be found in apps like KinectShop or Swivvel by FaceCake. Both show how retailers could create a virtual shop that lets Kinect users try on clothing while using the sensor to record body dimensions to automatically select the most relevant sizes and styles. So far we've only seen concept applications that use Kinect in this way, but NUads is the first step towards more interactive ways of using Kinect commercially.
Update: Microsoft has reached out to say that it has "strict policies in place that prohibit the collection, storage or use of Kinect data for the purpose of advertising." Additionally, the company and its advertising customers "are not collecting or using data obtained via the Kinect" according to a Microsoft spokesperson.