"The report says children in particular are placed at risk. Three of the largest databases set up to support the young are failing to achieve their aims, it says.
Terri Dowty, of Action on Rights for Children, said young people had never been so measured, graded, monitored and discussed; the level of intrusion could not be "justified on the basis of good intentions".
The report raises concerns about the Home Office system, ONSET, which gathers information from many sources to predict which children will offend. The report says children could be stigmatised by a system that contravenes the European convention on human rights."