They are children who live usually in the poorest countries and in the deprived communities. They are most difficult to reach. Children without a birth certificate lack formal identity and therefore are invisible to the authorities. Similarly trafficked children are hidden from those in society who are responsible for them. But children can also be isolated due to discrimination, on the grounds gender, ethnicity, disability or belonging to an indigenous group. Young people whose parents have HIV/Aids or who themselves have HIV/Aids can de severely disadvantaged. Armed conflict can result in families being disrupted, children orphaned or youngsters pressed into armed service.
The main cause of their invisibility is violations of their right to protection and this affects millions of children. Several factorsincrease the risk of children becoming invisible:
The lack or loss of formal identification.
Inadequate State protection for children without parental care.
The exploitation of children through trafficking and forced labour.
Premature entry of children into adult roles such as marriage, hazardous labour and combat.