I think I already posted about this before in this thread, but I couldn't find my old post. Last night at self-checkout, a guest had a Dyson vacuum that was spider-wrapped and I took it off for her and gave it to her, but she never scanned it and dropped it in her bag. I offered her guest service, said something like "I think the scanner missed your item, can I help you scan it?" but she said no, she didn't need assistance.
I wrote it down and told AP about it, and they stopped her at the door but they were still angry at me and said that I should have scanned it for her so that this wouldn't have happened and that they told me this before already.
A few other posters said they don't feel comfortable scanning for the guest and I agree, but AP is "forcing" me to scan any items for guests that are spider-wrapped or have any security devices on them.