concurring.
In joining the Court’s opinion, I share Justice O’Con-nor’s understanding of the narrow scope of what we hold today. To her concurrence, which I join as well, I add only that we do not answer another question that may reach us in due course, that is, how far, in dealing with fruits of computerized error, our very concept of deterrence by exclusion of evidence should extend to the government as a whole, not merely the police, on the ground that there would otherwise be no reasonable expectation of keeping the number of resulting false arrests within an acceptable minimum limit.