| In my previous related article I wrote about CCD | | | | varying directions in the form of a lissajous pattern (a |
| Readers, Laser Scanners and Pen Type Readers, | | | | starburst) or other multiangle arrangements. They are |
| there are a few more I will go through in this article and | | | | projected at the barcode and no matter what the |
| also how scanning methods are distinguished. | | | | orientation at least one r more of them will be able to |
| 2D Imaging Scanner - These are in fact the newest | | | | cross all the spaces and bars. These scanners |
| type available, the technology is completely different | | | | typically use a laser, however unlike the standard single |
| and the do not rely on light sources a light source. | | | | line lasers they produce patterns of beams allowing |
| These units have a small video camera that captures | | | | the reader to work at an angle. |
| the image of the barcode. The technology is | | | | Methods |
| essentially the same as the CCD technology however | | | | - Wand and Pen type readers require a swipe |
| the video camera in this unit has hundreds of rows of | | | | movement for operation. |
| sensors instead of a single row. The hundreds of | | | | - Semi-automatic units only need to be positioned near |
| sensors are arrange in a two dimensional array this | | | | the label and do not need to be swiped. |
| allows them to generate an image. | | | | - Fix-mount systems do not need to be operated, |
| Omni-Directional Barcode Scanners - These scanners | | | | instead the barcode is placed under the unit for a short |
| use a series of curved or straight lines each with | | | | period of time until scanned. |