Barcode Knowledge

Different Types of Automatic Identification  Technology


Various Automatic Identification and Data Capturing (AIDC) technologies are as follows:

  • Barcodes
  • Radio Frequency Identification (RFID)
  • Biometrics
  • Magnetic Stripes
  • Optical Character Recognition (OCR)
  • Smart Cards
  • Voice Recognition
  • Electronic Article Surveillance (EAS)
  • Real-Time Locating Systems (RTLS)

Barcodes:


Barcode Technology

Barcodes will be scanned originally by special optical scanners called barcode readers. A Barcode is an optical machine that is a readable representation of data or information and the information which the Barcode contains is about the object which is attached to the barcode. We will see bar-coded items in Supermarkets. Barcode reader uses a laser beam and the reader translates information from the image to digital data and sends it to the computer.

Barcode is called as UPN/EAN. The very first scanning of the Universal Product Code (UPC) Barcode back in 1974. Barcodes consist of small images of lines or bars affixed on many items in order to identify a particular product number, person or location.
Examples of Barcode in use today are UPC/EAN, Code 39, Code 93, Code 128 and Interleaved 2 of 5.


Barcode System

Barcode technology standards define:

  • Reading and decoding techniques
  • Rules for measuring the quality of printed/marked symbols
  • Rules and techniques for printing or marking
  • Rules for representing data in an optically readable format

Radio Frequency Identification (RFID):

Radio Frequency Identification
Radio Frequency Identification

Radio Frequency Identification (RFID) is a technology that uses radio waves to transfer data between a reader and an electronic tag that is attached to a particular object. This technology used in data collection and identification. Radio Frequency Identification (RFID) is mainly used for object identification and tracking. Without making direct contact with the item, the RFID obtains information on an item. An RFID system consists of three components – an antenna, a transceiver and a transponder (the tag).

Biometrics:

Biometric Technology
Biometric Technology

Biometrics is typically involved in the identification of a person and it compares captured biological data with the stored data of that individual. The biometrics system consists of a scanning device or a reader with software that converts the scanned biological data like fingerprints into digital format. If an individual uses a biometric system for the first time they have to enroll the biometric information. This biometric information is detected and compared with the information stored at the time they enrolled in the system. Fingerprint recognition, face recognition, Palm print recognition, and iris recognition are the typical types of Biometric systems used within the world of AIDC.

Magnetic Stripes:

Magnetic Stripes Data Capture
Magnetic Stripes Data Capture

The magnetic stripe is also known as swipe card and it is read by swiping magnetic reading head. Magnetic stripe technology will be used for security purposes. Magnetic Strips were found on a Magnetic Stripe Card and it is capable of storing data by modifying the magnetism of small iron-based magnetic particles on a strip of magnetic material. They provide standards for bank cards, credit cards, IDs, ATM cards, etc including the allocation of card numbers. These magnetic stripes contain information about the owner of the respective card. The information in magnetic stripes is read by a magnetic stripe reader. The first magnetic stripe cards were used in the early 1960s on transit tickets and in the year 1970s for bank cards.

Optical Character Recognition (OCR):

Optical Character Recognition (OCR)
Optical Character Recognition (OCR)

Optical character recognition uses technology similar to the one used for CD ROMs. Optical Card Panel is gold-colored laser sensitive material that is laminated in the card and the material reacts when laser light is directed at them. Optical Card is the electronic or mechanical translation of scanned images of text which were typewritten or handwritten or printed into machine-encoded text and it is used to convert books or documents into electronic files. The standards for optical cards can be obtained from ISO.

It checks mail-based payments by credit cards to computerize and text on the website. It is also used to digitize documents. OCR helps in pattern recognition and artificial intelligence. The optical card stores 4 and 6.6 MB of data that gives the ability to store graphical images such as photographs, logos, x-rays, fingerprints, etc.

Smart Cards:

A smart card is an integrated circuit card (ICC) and it is a pocket-sized plastic card that has a small chip attached and contains an integrated circuit. It is an electronic recording device. Smart cards provide strong security authentication in large organizations, they stores data and when necessary those records can be transmitted to a central computer. Most smart cards look like credit or debit card, but smart cards can function on at least three levels (credit-debit-personal information). These smart cards are capable of data storing, for providing identification and application processing.

Smart Card
Smart Card

Voice Recognition:

Voice Recognition
Voice Recognition

Voice Recognition or Speech Recognition is simply a task of translating the spoken words of that particular person and it converts the spoken words to text. It is a technology that can recognize speech. Voice recognition includes voice user interfaces such as voice dialing, call routing, search, simple data entry, preparation of structured documents, domestic appliance control, speech-to-text processing, etc.

Electronic Article Surveillance (EAS):

Electronic Article Surveillance (EAS) is a technology used to identify items as they pass through a gated area when you enter into any showroom in malls or libraries. This technology is used to alert the unauthorized persons from taking the items from a store, library or museum, and other important places. Theft can be encountered with this technology. RFID and some other types of Electronic Article Surveillance (EAS) systems are used inside the technology of Electronic Article Surveillance.

Electronic Article Surveillance (EAS)
Electronic Article Surveillance (EAS)

Real-Time Locating Systems (RTLS):

Real-Time Locating Systems (RTLS) are fully automated systems with wireless radio frequency solution that continuously monitors the positions and reports real-time locations of tracked resources. It always transmits information at frequent intervals via low power radio signals to a central processor. The locating system is deployed as a matrix of locating devices installed at a spacing of anywhere from 50 to 1000 feet and these locating devices determine the locations of the RFID tags. RTLS system uses battery-operated RFID tags and mobile networks based locating system to detect the location of RTLS tags.

Real Time Locating Systems (RTLS):
Real Time Locating Systems (RTLS)

Sensors:

The sensor is a device that measures a physical quantity and converts it into a signal and they can be easily read by the instrument. The various applications of sensors included in aerospace, medicine, manufacturing, robotics, machine, and cars. Sensors play an important role in the automation and control systems. Newly designed sensors are wireless which collects more information than the capability of traditional sensors and they utilize an advanced technique whereas the traditional sensors were wired.

Different Types of Sensors
Different Types of Sensors

Barcode technology

What is the benefit of barcode technology?

Barcode technology is a simple, universal and lower-cost method of recording and providing digital data for other applications. It gives greater efficiency, safety, speed and reliability along the supply chain while also enhancing profitability.

What is the barcode?

Barcodes have been widely used for item identification for more than half a century. They represent data in a machine-readable form, which allow an automatic identification of different products. It holds the relevant information of the item, it can also contain additional, portable information: e.g. what it is, where it comes from, owner of the product, etc.

It took a while until the technology became commercially successful. This happened when it started to be applied to automate the retailers’ checkout systems. Since then they have been used in plenty of areas such as tracking goods, optimizing inventory, warehouse management and many others… This technology forms one of the basis of the so-called Automatic Identification and Data Capture (AIDC) industry.

What kind of barcode types exit?

There are two major barcode types1D (linear) and 2D. Each has its own barcode symbologies. EAN, Code39, Code128, UPC, etc. are the symbologies of 1D barcode, Data Matrix, Maxicode, PDF417, etc. are symbologies of 2D codes. 1D barcodes contain black and white stripes standing next to each other while 2D barcodes are basically a square fill up, typically with black and white spots. In case of 1D barcode the width of lines and line spacings define the carried data, while in case of 2D barcode, also using some similar methods, the symbology itself contains the information. Therefore, 2D barcodes can carry much bigger amount of data than 1D. The commonly used barcodes are defined by GS1 standards.

What are the elements of barcode technology?

Barcodes are usually printed on the boxes of the FMCG (Fast Moving Consumer Goods) or on labels which then sticked onto the items to be identified. There are more and more applications where the barcodes are applied directly on products (DPM – Direct Product Marking).

Along the supply chain during material handling processes the barcodes are captured by barcode scanner devices which transfer the data to the different IT systems.

Nowadays there are several barcode technology devices with different specifications (stationary, mobile, …) available on the market. Mostly the circumstances, the project goals and the requirements define the best fitting barcoding equipment for the task. The key is to have readable barcodes along the complete supply chain. Choosing the right devices and supplies needs the special knowledge of the barcode specialists. Our company has more than 30 year experience with this technology with a strong supplier base.