Recording cameras on buses also catch plenty of indiscriminate random conversation. These recording devices were placed in a public space, so you have no expectation of privacy. However that doesn&#x27;t mean that they should be permitted in court or is that the FBI isn&#x27;t quite rude in having placed them.<p>It really is up to the judges to prevent tainted evidence and flat out fishing from being made cases of. The method is not unreasonable, in the right circumstances, but the justification and building of a case makes all the difference.