Supervision is an alternative measure that may be used instead of detention. Authorities are obliged to consider other measures, such as supervision, before deciding on detention. Even though this should always be done by the decision body, there have been concerns raised as to the lack of extensive and qualitative argumentation as to why inter alia supervision is not used instead of detention.
Supervision entails regular reporting to the police or to the Migration Agency, depending on which authority is responsible or the decision. It may also entail surrendering passports or other identity documents. Similarly to detention, supervision in the asylum context is rarely used during ongoing asylum procedures and when it is used it is mainly applied in relation to applicants in Dublin procedures or applicants who are undergoing a new procedure following a subsequent application.
In 2018 , a total of 1,156 supervision decisions were taken, of which 226 concerned Afghans, 188 Iraqis, 57 Iranians, 52 Somalis, 42 unknown nationality, 38 Moroccans, 35 stateless persons, 32 Mongolians, 30 Nigerians and 22 Uzbeks. No figures for 2019 were available at the time of writing (March 2020).
 Ch. 10, Section 6 Aliens Act.
 Swedish Red Cross, Förvar under lupp. See also comparative study on use of alternatives to detention, where Sweden was one of the studied countries: Odysseus Network, Alternatives to immigration and asylum detention in the EU. Time for implementation, 2015, available at: http://bit.ly/1JX4hMm.
 Ch. 10, Section 8 Aliens Act.