十五、在公共場合(超市)安裝監視器

　　1. 安裝監視器的優點：

　　利用監視器可以幫助警察catch criminals, thus reducing crime. a camera is more effective than security guards. 警察和保安不可能全天24小時工作，而camera will not feel tired.而且它更objective, sometimes our eyes might deceive us, while a machine can exactly record what happens, it can prevent much unnecessary embarrassment. Frighten off the criminals and reduce potential crime.

　　2. 缺點：

　　Critiques about installation of surveillance typically look at the infringement of people’s privacy.

　　Being photographed and recorded by the camera,很多人feel uncomfortable and no privacy.特別是女性，有些人可能會將camera獲得的資料用于illegal use.

　　3. 盡管有缺點，但是為了public safety ， 監視器是有必要的。但是應該盡可能balance the need for security with respect for individual’s privacy and freedom.