Mr. Drew Harris:

No, in practical terms what we do is focus in on individuals who have identifiable characteristics. Then we seek to find them in the 22,000 hours so that we have a full gamut of all of their movements and we get to a point where we can hope to see their faces to make an identification. Those individuals who engaged in serious criminality that night had no expectation of privacy as they all covered their faces but at some point those facial coverings are removed and that is the point at which we want to be able to, in effect, get an image of them and see if we can identify them through normal policing means. We would try to determine whether anybody local knows them, or whether anybody in the Dublin metropolitan region or the wider organisation knows them before we would consider other steps. We have to be proportionate in how we use technology but we do need technology to sift through that amount of imagery.