The Handbook aims to promote understanding and effective implementation of the Optional Protocol to the Convention on the Rights of the Child on the sale of children, child prostitution and child pornography. The publication describes the genesis, scope and content of the Protocol, and provides examples of measures taken by States Parties to fulfil their obligations under this instrument. This essential guide is addressed principally to public officials, UN organisations, child rights advocates and others who work with and for children, and whose duties and activities can enhance the protection of children from exploitation, whether on the national or local level.