Enlarge / A five-foot (1.5 meter) tall outdoor K5 security robot patrols the grounds of the Washington Harbour retail-residential center in the Georgetown district of Washington, DC July 26, 2017. (credit: ROB LEVER/AFP/Getty Images)) As of Thursday morning local time, a San Francisco animal adoption agency will immediately halt its recent use of a controversial security robot. The moves comes after the San Francisco SPCA had been scrutinized for its deployment of a Knightscope K9 to mitigate vandalism and the presence of homeless people at its Mission District office.