"Combining personal data on such a large scale creates high risks to the privacy of users, " the letter is understood to say.

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How new features, like the Career Explorer beta, are combining personal networks and predictive tools to help job seekers find career paths.

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Therefore, the solution will enable to protect the personal contents by combining with personal authentication such as the use of passwords or an IC card.

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It can be patterned alongside a microprocessor, combining in one unit all the memory and processing power a PC, cell phone or personal organizer needs.

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"By combining Nike's understanding and knowledge of great athletes with the powerful technology of Kinect, we have created a personal training program unlike anything currently available, " said Yusuf Mehdi, corporate vice president of Marketing and Strategy of the Interactive Entertainment Business at Microsoft.

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