The read is a family of devices, and you pick from it by what you actually need to know at that point. Work the selection drill, then the mounting check, then Riverside.
Pick the device from the menu for each point. Then write one sentence naming what that device reads that made you call it. Defend the call from what the point needs to know, not from cost.
Cartons arrive on a controlled induction where a label-placement standard guarantees the barcode always faces the same way at a fixed read point. You want fast, reliable, inexpensive.
Product comes off two pick zones onto throw-on lines and arrives however it arrives. You can't guarantee which face the label presents to the reader.
A routing decision at this point turns on weight, and an overweight carton has to be rejected without stopping the line.
Before product reaches equipment that assumes it fits, you need to confirm each package sits inside the design envelope, and you also want cubing data.
Some labels arrive torn or unoriented, and the barcode alone won't carry the job. You need to read printed characters or judge the condition of the package.
An engineer proposes mounting the registration photoeye at a slight angle across the belt because it "catches more of the carton." Mark whether that's correct, then say in one line what the angle does to a registration read.
What the angle does to the registration point, and why the widest cartons get hit hardest: