These days CCTV cameras are used at many places to prevent crime though there is also some loss of privacy. These cameras are now common. These were first used by Hitler in Germany. 

http://timesofindia.indiatimes.com/india/Learning-with-the-Times-CCTV-was-first-used-by-Germans-in-1942-to-observe-V-2-rocket-launch/articleshow/46819159.cms?utm_source=newsletter&utm_medium=referral&utm_campaign=digest_section

 


G. K. Ajmani Tax consultant
http://gkajmani-mystraythoughts.blogspot.com/

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