What is a hand held document scanner?
A scanner is device that captures an image such as a photograph, a handwritten or printed document, and converts it into digital data so that it can be read, interpreted and stored in a computer. As technology advances, manufacturers are continually working to invent and design technology devices that are more adaptive to end users needs. As more people move away from the traditional mode of working at a stationary location and start to handle jobs that either require frequent travel or allow them to work from home, there is a growing need to manufacture portable devices that are convenient to work with on the move.
The hand held scanner is one such device. This type of scanner, also known as a portable optical scanner, is a hand operated scanner that can be as small as a writing pen. As opposed to the ordinary scanner where the document is placed on a bed before it is scanned, the portable scanner is moved over the object being scanned.
What are the main features of a hand held document scanner?
Hand held document scanners are available in a broad variety of designs, sizes as well as varying types of functionality. In principle, the hand held scanner’s operation is similar to the ordinary scanner. It uses an optical system that features a photo sensitive detector that captures the reflection of the scanned image. The captured optical image is then converted into an electronic signal by use of an optical diode array or a charge coupled device (CCD) fitted in the scanner. Since the scanner captures an image in sections as it is moved across an image, a hand held document scanner will also has a decoding ability that enables it to bring these multiple images and merges them into a single continuous image.
Some hand held scanners also have a navigation sensor that detects the position of the scanner at any point in time relative to the object and also keeps tabs on the direction in which the scanner is moved. This enables the decoding function to correctly reconstruct the image irrespective of which direction and which side of the object you started scanning. A number of portable scanners will also have a stitching algorithm that takes multiple scans and merges them onto a single scanned image. This is especially useful for larger objects.
Even though many hand held scanners have their own memory storage that allows you to capture and store images on the scanner, this is only meant to be temporary before the data is moved to a computer. The scanner has an output data port and data cable that is used to relay the scanned information to a computer. Most portable scanners come with a plug and play feature via a USB port that enables the scanner to be automatically detected by the computer and installed. A number of the recent hand held scanners are wireless and connect to the computer through blue-tooth technology. The wireless scanners are powered by a battery that can run for 30 hours on average and enables the scanning of up to 20,000 images before replacement.
Once the data is transmitted to the computer, it is interpreted depending on the purpose for which it was scanned.
How is a hand held document scanner best used?
A hand held document scanner has diverse uses. The most common use of a hand held document reader is bar code reading. Most point of sale outlets have a hand held document scanner that scans the bar code of each product and transfers the data onto the POS computer that interprets the bar code into the product name and the price of the product. Another specialized type of hand held reader is a staff identification card reader.
But there are also general purpose hand held scanners that can be used to scan documents similar to an ordinary scanner. These are appropriate with business people that are always on the move. Company auditors and criminal investigators are examples of profession that often find it handy to have a hand held scanner close by to easily scan images documents and store them for future reference.
What are the benefits and advantages to using a hand held document scanner?
Due to its size and its portability, a hand held document scanners comes with several advantages. First, a hand held scanner can be used to scan documents when one is on the move. For sales staff and other jobs that require working away from the conveniences of the office, a hand held scanner is an ideal way to capture images of key documentation. A hand held scanner has also revolutionized how companies perform their asset inventory. As long as each item is had previously been tagged and bar coded, all you need to do is read the barcode and you can pick and store the details of each item.
A hand held scanner has made it possible to scan almost any object regardless of shape. For instance, it would be difficult to properly scan a medicine prescription stuck on a medicine bottle with an ordinary scanner. A hand held scanner is also ideal for bar code reading for the same reason. Goods being sold at a point of sale are usually of diverse shapes and sizes and it would be hard to scan them with a regular scanner.
Go for brands that have a track record of reliability. Also look out for models for which there is easily available and accessible technical support if required.
