There are multiple stores that carry laser bar code scanners, but online stores will usually be the easiest. Online stores like Amazon, eBay, Barcodes Inc and Microvision have a wide range of scanners for sale.
Motorola, which purchased the Symbol company in 2007, produces the products for the company, including bar code scanners. For the manufacturing process, Motorola uses such companies as Pacific Solutions in Bengaluru, India and Quadrant Technology in Kolkata, India
The use of bar code scanners exploded in the 70s as the technology quickly spread to retail outlets.
Barcode scanners begin by illuminating the code with red light. The sensor of the barcode scanner detects the reflected light from the illumination system and generates an analog signal with varying voltage that represent the intensity (or lack of intensity) of the reflection.
Americium is not used in bar code scanners.
you cannot laser technology cannot unscramble the code on the disk
I have seen pen scanners used as bar-code readers. At the local library come to think of it. But in reality the technology could be adapted to a multitude of applications
The vast majority of QR Code scanners are smart phones, like iphones, which utilize the camera and built in software to interpret the code and act on it.
You get what you pay for.
invented in 1952
You can try DKData, they have Barcoding Equipment, Handheld Scanners, even RFIDs
"Bar Code scanners are available to the public. In fact, a bar code scanner application is standard fare on smart phones or phones with a camera and internet connection, and often come pre-installed."
Barcode scanner lasers are classified as Class 1 devices, which means they are safe for human exposure as the laser beam is contained within the device and does not pose a risk to the eyes. However, looking directly into the laser beam can cause temporary discomfort or vision disturbances, but the scanners are designed to prevent this type of exposure.