Yeah, the barcodes on that sticker (there's another sticker on the AP itself, plus a proper label with 2x wired and 2x wireless MAC address barcodes of the same size). I've tried a few APs, my guess is it is because the barcode is too small for the reader I have.
I also have a barcode reader on my phone which can sometimes read the model barcode, but it can't focus close enough to read any others. If it could, then I could use the
Aruba AP installer app which would email me a spreadsheet.