Various surveillance techniques, a concise review

It is very important to encompass the identification and description of current and emerging surveillance technologies for improvement. Different techniques of surveillance are evaluated with regard to their potential to providing real opportunities in practise. So the outcome of this analysis is not to be seen as a stand-alone, but will serve as input for the other sub-tasks to choose appropriate technology to accomplish your purpose. To provide a well-researched basis for such an assessment, a number of surveillance technologies are selected to describe their functionality and effectiveness from a technological point of view. Since a description of the full range of all existent surveillance technologies is not possible within the scope, here tried to select technologies which have a great impact on the lives of citizens nowadays and will continue to have a great impact in the nearby future.