No, they always press a button if they want to screen an item again. If it was just a test image, it will disappear. If it wasn't, they'll be notified and it wi

No, they always press a button if they want to screen an item again. If it was just a test image, it will disappear. If it wasn't, they'll be notified and it will either be screened again or the employee at the scanner informs his colleagues.