Police supervision or police monitoring is a form of additional punishment and crime prevention. The regulations vary for various countries. A common feature was restriction and control of the place of residence of the supervised person. In certain situations a released convict was placed under police supervision. In some countries "unreliable persons" (usually in political sense) could be placed under police supervision.С.А. НЕВСКИЙ, ПОЛИЦЕЙСКИЙ НАДЗОР В СТРАНАХ ЗАПАДНОЙ ЕВРОПЫ И В РОССИИ В XIX В. (ПО МАТЕРИАЛАМ ЗАПИСКИ, СОСТАВЛЕННОЙ Н.Д. РЫЧКОВЫМ)
In 1871 regulations for police supervision were summarized in an internal report of Russian chief prosecutor deputy Nikolay Rychkov () for Russian Empire, France, Belgium, Prussia, Bavaria, and German Empire.
References
Further reading “But we Will Always Have to Individualise”1. Police Supervision of Released Prisoners, its ‘Crisis’ and Reform in Prussia (1880-1914)