Full form of QR Code: – QR code stands for Quick Response code. QR code means fast response code. It is a two-dimensional bar code and can easy to read by QR code reader software. A bar code is an optical label readable by a machine that contains information about the element to which it is attached.
QR codes often comprises data for a identifier, locator, or tracker that points to a website or application. A QR code uses four standardized encoding modes (numeric, alphanumeric, byte / binary and kanji) to store data efficiently; we can also use extensions.
QR codes (2D barcodes) are used to encode and decode data at a fast speed. The currently popular topic in both research and practical applications is the use of camera phones to read two dimensional barcodes for various purposes.
But until now, the information provided by the QR codes was only static. What you see is exactly what was encoded. This document proposes the notion of contextual QR codes that combine a public QR Code and private information, in order to provide data related to a particular context.
For example, a public tag <Hello> will be decoded and translated to “Good evening, Jack Richards” or “Subha ratri Jack Richards”, if the system can obtain data such as the user’s name, the language used in the machine. (English or Hindi, for instance) and the time when the interaction takes place.
History Of QR Code
In the year 1994, Japanese company Denso Wave invented the QR code system. Its purpose was to track vehicles during manufacturing; It was designed to allow the scanning of components at high speed.
QR codes are presently used in a much extensive way which comprises of commercial tracking applications and convenience-oriented applications aimed at mobile phone users (called mobile tagging). QR codes can be used to display text to the user, to add a vCard contact to the user’s device, to open a Uniform Resource Identifier (URI), to compose an email or text message, to connect to a wireless network.
There are many QR code generators available as software or as online tools. The QR code has become one of the most widely used two-dimensional code types.
Elements of QR Code
There are five basic elements that are used for QR code functionality. These elements are Pattern, Alignment Pattern, Time Pattern, Quiet Zone, and Data Area.
- Pattern; The three large squares at the corners of a QR code are used to identify the size, position and angle.
- Alignment pattern; This pattern is used to modify the distortion of the QR code.
- Timing pattern; The pattern composed of black and white modules. This pattern is used to determine the central coordinate of each cell in the QR code.
- Quiet zone; It is part of a QR code which is actually a margin space that is used to detect the QR code. It consists of four cells and is used for quiet area.
- Data area; This element stores the data conversion in binary digits 0-1. It consists of a matrix of rows and columns. This element has the functionality of error correction.
Features Of QR Code
High capacity data encoding;
The most important feature of the QR code is the coding of huge amounts of data. Conventional bar codes can store up to 20 digits. In comparison to bar codes, QR codes can provide up to a hundred times more information than bar codes. QR codes can manage all kinds of data, for example, letters, numbers, graphics and audio or video files. A QR code can encode up to more than 7,000 characters.
Small print size;
Since a QR code symbol is designed with a two-dimensional structure, it can encode 10 times more data than a barcode of the same size. A micro QR code can be used for a smaller print size.
Durability and resistant to dirt and damage;
The QR code has the ability to execute the correction of error. The data in the QR codes can be recovered even if some parts of the symbol have been destroyed or damaged. The restoration of the data depends on the proportion of the damage.
Readable from any direction in 360 degrees;
A QR code is designed so that it can be read quickly from any direction in 360 degrees. This is possible due to the position detection patterns in the three corners of the symbol. The QR code symbol quickly readable can be made by these patterns. This pattern is also designed to evade background interference.
Structured attached feature
Another feature of the QR code is its structured attached feature. A QR code symbol can contain up to 16 separate smaller symbols, each of which contains different unique information. The advantage of this structure is that it can be printed in a smaller space. Conversely, several QR code symbols can be grouped into a single data symbol
Functioning of the QR code
A QR code is a square-shaped two-dimensional bar code that comprises many black square points in a white configuration. There are mainly four types of data, such as numeric, alphanumeric, byte or binary and Kanji, which are encoded in information or by compatible extensions.
The processor locates the three distinctive squares in the corners of the image and normalizes the image size, orientation and viewing angle, with the help of a smaller square near the fourth corner. The small points are converted into binary numbers and the validity is verified with an error correction code.
What are QR codes used for?
Since they can store different types of information, QR codes are used for many purposes. QR codes are commonly used to maintain data such as:
Simple text – welcome messages at conferences
Addresses – personal address, business address
Phone numbers: personal phone number, phone number of your company
Email addresses – personal or business accounts
URL – addresses of specific websites or web pages
Links to applications: found in app stores such as Google Play or the Apple App Store
Payments: QR codes can store information about your bank account or credit card
Authentication of online accounts: websites can display a QR code that a registered user can scan with their smartphone and automatically log in.
Wi-Fi Authentication: QR codes can be used to store the authentication data of Wi-Fi networks, such as SSID, password and encryption type: when you scan the QR code with your smartphone, you can automatically join that network
Other diverse uses, such as funerals (according to Wikipedia, in Japan, there are tombstones with QR codes that point to web pages that contain information about the deceased), or for transcriptions and titles (used mainly in India, China, Mexico)
Where are the QR codes displayed?
You can find QR codes in all kinds of locations, but some of the most common places where you can see them are:
- In business cards, containing contact data of all kinds.
- In the smartphone package and other devices, which contains links to applications, the support service for the device you purchased, the product page with information about that device, etc.
- In television ads, billboards, online ads and other types of ads.
- On inventory labels in companies, which contain information such as serial numbers, part numbers, hardware specifications, inventory dates, etc.
In short, you can place a QR code on anything that can be seen and scanned with a smartphone: from a piece of paper to a piece of cloth, a television screen or the facade of a building. The possibilities are endless.
Benefits of the QR code
- Versatility is the main advantage of a QR code.
- QR codes can be used for everything and anything. QR codes can be added to almost anything, from product packaging to television advertising, from magazine pages to billboards, and this versatility can be very useful for marketers.
- Almost free and cheap, it can embed many types of media, easy to use.
- A simple scan captures the desired information by which there is no need to write vital details.
- The advantage of this system is that it is no longer necessary to print your task sheet.
- It Provides quick access to additional information. By using web analytics, and by using unique QR codes for different locations, marketers can gain valuable insight into how well campaigns are going, what works and what does not.
- It does not require understanding to write code.
- It is not necessary to write a long URL, it could help to serve students with visual disabilities.
- A fun and effective way to deliver improved information directly.
- They are also beneficial for customers and businesses. For example, a company saves money and advertising costs by distributing a QR code on its website or URL. This QR code can be scanned by a customer and this allows them to store the information for future reference.
Generating a QR code
In addition to reading a QR code created by another person, it is not difficult to create oneself. It is recommended that the code be created on a laptop, as this will facilitate the scanning of the new code with a QR code reader for smartphones.
Of course, it is also possible to create a QR code with a smartphone, and each method has its advantages and disadvantages. QR codes are produced by a web-based tool on a computer. Writing “QR code generator” in a search engine will produce the relevant sites.
The site called ‘QR code generator’ allows the user to create their own QR codes. On this site, you can create QR codes to link them to free text, a URL, contact information or SNS.
Reading a QR code
Reading a QR code is simple One option is to use a reading device such as a handheld scanner, a handheld terminal or a fixed scanner. The most common and convenient devices for reading.
Reading a QR code on a smartphone involves first installing an application from Google Play for Android or the App Store for iPhone. The search for a “QR code reader” in the search box will produce a long list of applications.
All these applications are free download and are compatible with any type of QR code. They should be used on a smartphone that has a camera. After installing the application, selecting it will activate the camera of the smartphone, with a framing guide on the screen.
The QR code can be scanned with the camera. It may be necessary to hold the camera in one place for a while until a beep indicates that the scan has been completed. The smartphone screen will direct the user to the URL where the information is stored.
QR Code Website / Software and Reader
There are a number of software available for free on the market to create QR codes and there are also readers for PCs and mobile devices. The following are some examples of software and readers:
- Website / software:
- QR Mobilize
- QR Stuff
- QR-Code Studio
- Code two
- QR Code Generators
- QR code reader
- The TapMedia QR reader
- о i-nigma
- iPhone applications QR Code Reader
- ScanLife (Free)
- Barcode (free)
- Free QR code reader applications for Android
- Barcode scanner (free)
- ShopSavvy (Free)
- ScanLife (Free)
- QuickMark (Free)
- QR code reader applications for Windows Phone 7
- BeeTagg (Free)
- Quickmark (Free)
Types of Of QR Code
It is worthwhile to briefly examine each type of QR code. The QR code model 1 is the original QR code and can store up to 1,167 numbers. Model 2 was created by improving model 1 so that the code can be read more easily and can store up to 7,089 numbers.
An ordinary QR code typically denotes model 2. The following is the micro QR code. There is only one orientation detection pattern for this code. The advantage of the micro QR code is that it can be printed in a smaller space than the previous models.
An iQR code can be constituted by square or rectangular modules. It can be printed as an inverted code, a black and white inversion code or a dot pattern code. SQRC has a read restriction function. It can be used to store private information or manage the internal information of a company.
Examples of QR codes in Marketing
Some QR codes have been creatively designed. It is possible to have different shapes or styles whenever square or rectangular modules are present.
Recently, QR has become popular, making it easy to find nearby QR codes in everyday life, for example, in product announcements, on business cards, on homepage banners and even in academic journals.
Examples of QR codes in academic journals.
Some magazines add a QR code on the cover of the magazine, or on the title page or at the end of each article, so that readers can directly access the linked material, such as a website, an address or other contact information, a video, an animation, or other web content.
The staff of the magazine added a QR code on the title page of each article. If the reader scans this code, it leads to a video that goes with it. This link goes to the YouTube website as the video file has been stored in the YouTube server.
The reader of the magazine can see the video in the surgery with background music. On the last page of the article there is another QR code, which leads to the complementary material. When the reader scans this code, the complementary material that was not included in the PDF file of the paper diary is displayed. This material is available only on the magazine’s website.
QR codes are a vital marketing tool
Since QR codes made their way into marketing, they have become an indispensable part of virtually any campaign. The additional features offered by modern QR code generators make the codes especially suitable for reaching potential customers.
Versatile application areas.
Since QR codes provide a direct link in the online world, this produces innumerable possibilities to attract users in a positive way. From simple information, such as contact details, event dates and product descriptions, to special promotions, such as sweepstakes, coupons and voting, you can offer your customers virtually anything they can display in a web browser. All this with a single scan.
Activation of the client
By scanning the QR code, potential customers get more instantly involved with your ad or marketing message. They have actively opted to request more information. Clients, therefore, are more involved and retain the information received more time in their memory. This advantage should not be underestimated, since consumers are faced with hundreds of advertising messages every day.
Direct contact to the customer and feedback from users.
The QR codes also establish a direct contact with their clients and promote a dialogue with them. A QR code can, for example, provide the user with the ability to send comments about products or services. On this occasion, you may also receive email addresses or contact information of your users and may use this data for other interactions.
QR code technology is easily accessible
What makes QR codes especially attractive for commercialization is their low cost and universal applicability. Aimed at mobile users, QR codes help reach their audience anytime, anywhere. No special equipment is required apart from a smartphone, and there are no intermediaries between you and the user.
The success of the campaign is measurable
The scanning of a Code and the forwarding to the destination website can be recorded and counted. In addition, you can identify, when, where and with what device the QR code was scanned. Therefore, the success of a campaign of this type is always transparent and traceable in real time. Therefore, the QR code is suitable not only to amplify your print advertising, but can also act as a quantitative measurement tool.
Use of the QR code in the library
The QR code is used in different ways by different organizations for their personal purposes, such as the promotion and marketing of products. The library uses it as a means to communicate to users their documents / information they want. The libraries of the 21st century are completely automated and know the demands of the users.
They always try to provide world-class services to their users beyond physical limits. There are many libraries abroad that have implemented the QR code. CD-ROM, ticketing, entertainment and transportation tickets, VCard information, commercial tracking, product marketing / loyalty and product labeling in the store. Therefore, we can say that the QR code can be used in various ways according to the need.
The main purpose of using the QR code is to give a brief message to the users. There are several ways to use the QR code in the Library environment.
- Give instructions to the user.
- Provide brief information to the user.
- Report the required documents.
- Promote library services.
- To create a link to all the resources available in the library.
- To create a link to the virtual visit of the librarian’s sections
For use in library exhibitions such as videos, audios and websites
- The QR code is used to provide text messages for the reference service and contact information of library staff, as well as library users.
Students are probably the best candidates to use QR codes. They are experts in digital technology, are equipped with smart phones and crave as little interaction as possible with teachers and professors. QR codes in the classroom belong to them more than anyone else.
-Invest in a QR code stamp. Use it in everything you give so your teacher always has your name and contact information.
– Share your notes. Forward a QR code to a friend to give you online access to your class notes.
-Make some extra money. Place your QR code on the bulletin boards that link readers to the tutoring sessions with you.
-Add depth to presentations. Show your teacher and your class that you did your research. Give them the option in your slides to scan a QR code for more information.
-Test yourself. Place QR codes on objects such as stones or bones in a skeleton that will test your knowledge of names and functions.
-Organize study groups. Distribute QR codes in class with information about the date and location of the next study group.
-Party time. Celebrate the weekend with style. Include a QR code in the next invitation to the party with the time, location and your phone number.
- You must use the phone with a camera and the correct reading software that can scan the QR Code image.
- Not everyone has a smart phone, lack of awareness and familiarity with the QR code among people
- The QR code may be distorted or not read correctly the possible problems of the interface, it goes to a site that is not the best for the use of the mobile phone, the abuse of the technology excludes the use of non-cellular phones, the low use of QR codes, not all have a QR reader.
- To scan the code embedded in the QR code, it takes more time.
- You need a software for QR code read.
- Internet connection is must.