Lots of Lockboxes

Normally, when I show homes, the lockbox is on the front door or nearby. But, when we show homes in a high rise, the lockboxes will be centrally located. This is the lockbox box at a high rise in Scottsdale. I’ve never seen so many boxes at once. The blue boxes are the new ones. The grey boxes are the old technology. I wonder if those REALTORS know that not all agents can access the old ones?