Optical Barcode Reader:

A Bar code Reader is an optical scanner that can scan printed standardized information, decipher the information contained in the standardized identification and send the information to a PC. Furthermore, about all standardized tag readers contain decoder hardware that can dissect the standardized identification's picture information gave by the sensor and sending the standardized identification's substance to the scanner's yield port. 

Pen-type reader: 

Pen-type reader comprise of a light source and photodiode that are put beside one another in the tip of a pen. To peruse a standardized identification, the individual holding the pen must move the tip of it over the bars at a moderately uniform speed. The photodiode measures the force of the light reflected back from the light source as the tip crosses each bar and space in the printed code. 

Laser scanners: 

Laser scanners work a similar path as pen-type readers aside from that they utilize a laser bar as the light source and regularly utilize either a responding mirror or a turning crystal to examine the laser shaft to and fro over the standardized tag. Likewise with the pen-type reader, a photograph diode is utilized to quantify the force of the light reflected back from the standardized tag. 

CCD readers (otherwise called LED scanners): 

CCD readers utilize a variety of many modest light sensors arranged in succession in the leader of the reader. Every sensor quantifies the power of the light preceding it. Every individual light sensor in the CCD reader is amazingly little and in light of the fact that there are many sensors arranged in succession, a voltage design indistinguishable from the example in a scanner tag is created in the reader by successively estimating the voltages over every sensor in the line. 

Camera-based readers: 

Two-dimensional imaging scanners are a more current sort of standardized identification reader. They utilize a camera and picture preparing systems to decipher the standardized identification. 

Camcorder readers: 

Camcorder readers utilize little camcorders with the equivalent CCD innovation as in a CCD standardized identification reader aside from that as opposed to having a solitary line of sensors, a camcorder has many lines of sensors orchestrated in a two dimensional cluster so they can produce a picture. 

Huge field-of-see readers: 

Huge field-of-see readers utilize high goals mechanical cameras to catch numerous standardized tags at the same time. All the standardized identifications showing up in the photograph are decoded in a split second (ImageID licenses and code creation apparatuses) or by utilization of modules (for example the Barcodepedia utilized a blaze application and some web cam for questioning a database), have been acknowledged choices for settling the given undertakings. 

Unidirectional standardized tag scanners: 

Unidirectional examining utilizes "arrangement of straight or bended checking lines of shifting bearings as a starburst, a Lissajous bend, or other multi angle course of action are anticipated at the image and at least one of them will have the option to cross the entirety of the image's bars and spaces, regardless of what the direction. 

PDA cameras: 

While PDA cameras without auto-center are not perfect for perusing some regular standardized identification groups, there are 2D scanner tags which are enhanced for PDAs, just as QR Codes (Quick Response) codes and Data Matrix codes which can be perused rapidly and precisely with or without auto-center. 

Wireless cameras open up various applications for shoppers. For instance: 

• Movies: DVD/VHS film inventories. 

• Music: CD inventories – playing a MP3 when checked. 

• Book inventories and gadget. 

• Groceries, sustenance data, making shopping records when the remainder of a thing is utilized, and so forth. 

• Personal Property stock (for protection and different purposes) code filtered into individual money programming when entering. Afterward, checked receipt pictures would then be able to be naturally connected with the fitting passages. 

• If retailers put scanner tags on receipts that permitted downloading an electronic duplicate or encoded the whole receipt in a 2D standardized identification, customers could without much of a stretch import information into individual money, property stock, and basic food item the executives programming. 

Cell phones: 

Cell phones can be utilized in Google's versatile Android working framework through both their own Google Goggles application. Nokia's Symbian working framework includes a standardized identification scanner which can examine standardized tags, while mbarcode is a standardized tag reader for the Maemo working framework. 

Lodging: 

An enormous multi function standardized identification scanner being utilized to screen the transportation of bundles of radioactive pharmaceuticals. 

Standardized tag readers can be recognized dependent on lodging configuration as follows:

Handheld scanner: 

With a handle and ordinarily a trigger catch for turning on the light like this are utilized in manufacturing plant and ranch mechanization for quality administration and transportation. 

PDA scanner (or Auto-ID PDA): 

A PDA with an inherent standardized identification reader or connected standardized identification scanner. 

Programmed reader: 

A back office hardware to peruse barcoded records at rapid (50,000/hour). 

Cordless scanner (or Wireless scanner): 

A cordless standardized tag scanner is worked by a battery fit inside it and isn't associated with the power mains and move information to the associated gadget like PC.