Controlled delivery power permits supervised transit of consignments domestically or abroad to identify persons involved in customs offences. Section 109A authorises the proper officer, or an authorised officer, to undertake controlled delivery of consignments within India or to a foreign country in consultation with that country's competent authority; controlled delivery is defined as permitting a consignment to pass out of, or into, India with the knowledge and supervision of the proper officer to identify persons involved in offences or contraventions under the Customs Act.