"In sum, a person who knowingly operates a device that is capable of inadvertently exposing his conversations to third-party listeners, and fails to take simple precautions to prevent such exposure, does not have a reasonable expectation of privacy with respect to statements that are exposed to an outsider by the inadvertent operation of that device."
hang on ... a person who knowingly operates a device (makes a call on a phone), that is capable of inadv exposing to 3rd party (all phones if network is tapped) and fails to take simple precautions (such as not making the call), does not have reasonable expectation of privacy?