Big Brother is listening as well as watching

The professed goal of audio surveillance on mass transit systems may be to protect passengers. But privacy advocates say it crosses a line, amounting to violations of free speech and the right to be free from unwarranted and ‘unreasonable’ searches. By Taylor Armerding.
Read more: http://www.csoonline.com/article/3090502/security/big-brother-is-listening-as-well-as-watching.html?source=Snapzu