QR code or commonly known as QR Code is a form of evolution of the bar code from one dimension into two dimensions. The use of QR codes have been very prevalent in Japan This is because the ability to store data larger than the bar code so as to encode information in Japanese because it can accommodate letters kanji . QR Code has received international standardization and the standardization of the Japanese form of ISO/IEC18004 and JIS-X-0510 and has been used extensively through mobile phones in Japan.
QR Code is a kind of code matrix or bar code developed by two-dimensional Denso Wave , a division of Denso Corporation , which is a Japanese company and published in 1994 with the main functionality can be easily read by the scanner QR stands for quick response or response quickly, in accordance with its purpose is to convey information quickly and get a response sooner. Unlike the bar code, which only stores information horizontally, QR code capable of storing information horizontally and vertically, and therefore automatically QR codes can hold more information than a barcode.
QR code was originally used for tracking parts in vehicle manufacturing, QR code but is now used in a broader context, including commercial applications and ease of tracking-oriented applications aimed at mobile phone users. In Japan, the use of QR codes are very popular, almost all kinds of mobile phones in Japan can read QR codes because most of the entrepreneurs there have chosen QR codes as an additional tool in product promotion programs, both engaged in commerce or in the field of services. In general, QR codes are used to embed information of a company's website address. In Indonesia , QR code was first introduced by KOMPAS. With the QR code on a daily newspaper in Indonesia, readers can access news via cell phone can even give input or opinion to a reporter or editor of the newspaper.
QR code works like a physical hyperlinks that can store addresses and URLs , phone numbers, text and text that can be used in magazines, daily mail, advertising, on the bus signs, business cards or other media. Or in other words as quickly liaison content online and the content offline . The presence of this code allows the audience to interact with the media ditempelinya via mobile phone effectively and efficiently. Users can also generate and print their own QR code for others to visit one of several encyclopedias QR code.
In addition, QR design allows users to incorporate company logos, video clips or photos into QR code, without losing the substance of any information from the source are included. Examples of the use of QR codes in which the content contains video clips is a QR code that is used by the singing group from England called the Pet Shop Boys in 2007 . When the code is scanned correctly, then the user will be redirected to the site Pet Shop Boys. Also in the year 2009 QR code used for marketing campaigns Movie 9 at San Diego Comic Con . At that time, customers are given a card that displays a QR code which has been integrated with the artwork in question. Thus, customers can access footage via the QR code.
QR codes can be used as food security by adding a QR code containing data on nutrition and shelf life of each food labels so that customers can feel more secure in choosing the food they buy because they can find out information about the food. In Japan, it has been applied byMcDonald . There are 19 types of "sandwich" is given a QR code containing allergy information, the number of calories and nutrients contained in these sandwiches. Besides the QR code can also be provided at bus stops, so passengers can find out where the bus is being awaited. The way it works is by providing hyperlinks to the camera CCTV on every street through the Internet connection on the phone.Furthermore, QR code can be mounted on a student card, that will facilitate the attendance of students, and facilitate access for students, teachers, and parents of students to teaching and learning process information.
QR codes can be used on phones that have QR code reader application and have internet access GPRS or WiFi or 3G to connect the phone with the site is via the QR code. Customers, which in this case is the only mobile phone users have to activate the program QR code readers, point a camera at the QR code, QR code reader then the program will automatically scan the data that has been embedded in the QR code. If the QR code contains the address of a site, then the customer can directly access the site without having to first type in the address of the destination site. If you want to access the QR code with the phone without a camera, so the first thing to be done by the user is to run the first application of existing browsers on cell phones, and enter the URL of the page in question, then enter "ID" or 7-digit number listed below code and click the Go button, the user will obtain the desired digital content. It is certainly easier for the customer in getting the information offered by business owners. Types of applications that can read QR codes, among others, for example Kaywa Reader , which can be installed on mobile phones nokia , iMatrix , applications for the iPhone and zxing Online decoders that can be used to decode a QR code image by entering the URL of the image or by uploading.
QR codes have a high capacity in the data encoding, which is capable of storing all data types, such as data numeric , data alphabetical ,kanji , kana , hiragana , symbols , and binary code . Specifically, the QR code can store numeric data types up to 7089 characters, alphanumeric data up to 4296 characters, binary code up to 2844 bytes, and up to 1817 kanji characters. Besides the QR code has a smaller display than the barcode. This is because the QR code is able to accommodate data horizontally and vertically, and therefore automatically zoom the image size of QR code can only seperspuluh of the size of a bar code. Not only that QR codes are also resistant to damage, because QR codes can correct errors up to 30%. Therefore, although most of the QR code symbol dirty or damaged, data can still be stored and read. Three square-shaped mark on the three corners has a function so that symbols can be read with the same results from any angle along the 360 degrees.
Source: wikipedia
