I've seen a detergent box that can scan the blinking glass window of the scanner. All I can see is ambient light. Maybe these devices have an infrared laser pointer beam, but IR is not harmful unless it is close enough to your hand for baking. You will feel it because it is hotter than a warm brick wall. If there is a device that uses laser pointer ultraviolet light. There is no reason to make it very strong. It sounded like sunburned under the glare of a small window in a prison cell south of me.
How do you know that the scanners used by these customers contain ultraviolet light. Employees use the same things eight hours a day. If there are some design flaws. Then someone will definitely notice. Why is the laser in "Star Wars" actually like a beam of light, but looks like a bolt? Well, contrary to popular belief. "Star Wars" weapons have nothing to do with lasers. Instead they were laser pointer, they used plasma overheated bolts to shoot at the enemy.
The shock wave is very precise and deadly. Now, why do you ask, are they called laser cannons or turbo-lasers or what? Well, the Republic fought a war with the Kumauri Empire for 10,000 BBY. The Kumauri Empire did use lasers, and the Republic reverse-engineered some of their technologies to make their own weapons. Although the current weapons in "Star Wars" have nothing to do with lasers, the name has existed for thousands of years.