Are you frustrated seeing airline passengers bypassing luggage check in by bringing on board luggage that is too large to fit in the overhead? Are you tired of not having room for your carry on because of it? This carry on verifier would be located at baggage check in as well as at the boarding gate. This verifier, if enforced, requires any carry on to be put into the maximum allowed container which then confirms it is within carry on size and weight. It will then produce a colored sticker that is for that day and is then confirmed present by the boarding attendant. Missing sticker means it does not meet the carry on specifications or was not checked by the verifier.