From Walkypedia!
In the world of retail there can't be many more revolutionary products compared to the handheld barcode scanner. The advantage of this kind of scanner is it is so simple to use. Just point it at the barcode, press the trigger and the job is done. And since it is worked by hand anyone using one of these simple pieces of equipment is less likely to make a mistake.
Strictly speaking handheld barcode scanners are coupled to the computer by a cable. You will find handhelds which are connected up wirelessly. There is no cable restricting how far the scanner may be used from the computer; the sole limit is the array of the wireless signal. They can be small enough to fit right into a pocket. The purists don't class these scanners as handheld, instead they'll use the term "wireless barcode scanner." However, these scanners do offer the same ease of use as the handheld variety.
cash register - The handheld scanners that most people will be using will utilise 1 of 2 scanning technologies, the laser and also the LED. Lasers continue to be the most popular, despite the introduction of LED scanning technology over the last few years.
With laser scanning technology the scanning unit contains a laser diode. The laser diode generates a dot which becomes the beam of light by being projected into a vibrating mirror. The laser beam is then scanned along the barcode.
LED is a newer type of scanning technology as well as the handheld barcode scanners incorporating it will be more durable. Also LED is much more versatile in the type of barcode it can read - you can use it to scan horizontal bar codes as well as the more typical vertical ones. The sensor then picks up the reflected light and also the data is converted into ASCII text.
point of sale system - One decision that anyone thinking of using a handheld unit inside their business is whether to stay with the conventional 1D type of scanner or even the newer 2D units. The 2D scanners are getting to be more popular as they offer more, especially of course the ability to read the new 2D barcodes for example data matrix. These barcodes holds much more information than the 1D type can which obviously ensures they are attractive to use. However, the 2D handheld scanners do cost a lot more than the 1D units. Obviously if your business can manage with the capacity restrictions from the 1D barcode then there is no real must upgrade. Of course the converse can often happen and many more businesses are now looking at the higher specification units.
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