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(CNN) - The first of 150 new full-body scanners are being installed at two of the busiest airports in the United States: Boston Logan and Chicago O'Hare.
The move comes after many international airports, including several in Europe, introduced the machines as an added security precaution. Their introduction followed the alleged attempt by Umar Farouk Abdulmutallab to blow up a flight bound for Detroit on Christmas Day.
The scanning machines, which feature in Paula Newton's report for CNN, take a near-naked full-body image to reveal if a passenger has anything hidden underneath his or her clothes. Supporters of the devices believe they are a vital tool for security agencies in the fight against terrorism and will deter attacks by terrorists.
But the machines are also controversial. The American Civil Liberties Union has denounced them as a "virtual strip search," while Pope Benedict XVI has stressed the importance of protecting the "integrity" of travelers as they pass through airports.
But what do you think? Are body scanners an invasion of privacy? Or are they a vital tool to protect against attacks on air passengers? Have you yourself been body scanned? What was the experience like?
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