The home secretary told MPs of his intentions when he announced that the numbers of would-be refugees coming into Britain had fallen by around a half in February and March.
Blunkett said, "I want them [ID cards]. I do want to know who is here. I want to know if they are working illegally; I want to know if they are drawing on services."
"I don't think we will get them in this Parliament but I will be putting my recommendations to cabinet hopefully before the summer."
The Home Office's consultation document on entitlement cards and identity fraud earlier this year emphasised the role of biometric technologies.