I think they showed him himself coming into the store so he could have an idea of how the quality of what he would be looking at...and he didn't even recognize himself. That makes the most sense.
It does ... but he should have known where he was, in that case

Whether it was Home Depot or Best Buy, they just convinced me never to buy a home security system from them. If they have equipment with an image from "the end of January" and know it's still that poor when Rolf visits the first weekend in March....that's some baaaaaaaad security.
And why do they still have an image from "the end of January" available when a tip comes in at the end of February?
Even a casino is only required to keep security videos for 7 days there.