 In his concurring opinion, Justice Alito wrote with respect to privacy: "Short-term monitoring of a person ’ s movements on public streets accords with expectations of privacy" but "the use of longer term GPS monitoring in investigations of most offenses impinges on expectations of privacy." Alito argued against the majority's reliance on trespass under modern circumstances. Specifically, he argued that the common-law property-based analysis of a "search" under the Fourth Amendment did not apply to such electronic situations as the one that occurred in this case. He further argued that following the doctrinal changes in Katz, a technical trespass leading to the gathering of evidence was "neither necessary nor sufficient to establish a constitutional violation". In his concurring opinion Alito outlined that long-term surveillance can reveal everything about a person:
