Ok, I work for twilight preload. I sort packages into cages based on the stickers that metro puts on the packages. I start work tonight and get about 30 packages with no SPA labels on them. I go upstairs to bitch at the PT supervisor. He tells me that they are testing the new thermal handheld printers. I say ok and go back downstairs. I look at some packages that it was used on and it is MAYBE 2 inches long and a half in tall. It's in light red ink. They scan the barcode and then wipe it on the package. Needless to say, it won't work. Most were smudged and the 1Z's you could not read. If you know anything about how preload works you know that they read the last four of the 1z on the SPA label and match it up with the 1z to make sure the right SPA label is on the right package. I recycled at least 100 packages tonight. I can't wait until tomorrow when they have about 200 misloads and they decide that these scanners will not work. They are so dumb it's amazing.