Children who approach police officers on patrol in the east of Cardiff will be given a Cop Trumps card.
Speaking about the initiative PC Alex Reed said, "We hope the cards will help increase engagement between local officers and young people.
"The cards contain important information about keeping safe and healthy and having the backing of our local rugby players will certainly help us get the message across."
The idea for the cards is that they are a good way to engage primary school pupils about crime prevention issues and at the same time encouraging them to take part in sport and eating healthy foods.
To kick off the project some lucky pupils from St Mellons recently attended a Blues training session at the Vale Resort and then got their hands on the very first complete sets of cards.
The cards are currently only being used in Rumney, Llanrumney, St.Mellons and Trowbridge.