The parents of missing Madeleine McCann have backed the Child Rescue Alert (CRA) scheme in the UK and want European-wide coordination.
The alerts allow a fast flow of information from police to the media.
These carry a description of the child, suspected abductor, location, and any vehicle involved.
Kate and Gerry McCann's daughter went missing in Portugal in May 2007. An action line, 0300 2000 333, now takes information about missing children.
A spokesman for Kate and Gerry McCann said the couple hoped the system would be co-ordinated across Europe.
The scheme in the UK was relaunched as part of International Missing Children's Day on 25 May.
Spokesman Clarence Mitchell said: "The McCanns are delighted the scheme is up and running.
"They're very pleased, you could say, delighted, and hope it will lead to children being saved and prevent any other family going through what they have.
"They now hope it will be properly coordinated across Europe."