Electronic surveillance covers electronic transmission of voice and data
L I I 15 Legal Information Institute LII a small research, engineering, and editorial group housed at the Cornell Law School 2015 Electronic Surveillance https://www.law.cornell.edu/wex/electronic_surveillance
Two general categories of electronic communication surveillance exist. Wire communications refer to the transfer of the human voice from one point to another via use of a wire, cable, or similar device. When law enforcement "taps" a wire, they use some mechanical or electrical device that gives them outside access to the vocal transfer, thus disclosing the contents of the conversation. Electronic communications refer to the transfer of information, data, or sounds from one location to another over a device designed for electronic transmissions. This type of communication includes email or information uploaded from a private computer to the internet.