You may have seen these recently in various places, you may have heard people talking about them in the realm of mobile and wondered what the heck they are. Quick response codes (known as “QR” codes) are a very convenient way to display a small bit of information that is easily scanned and processed typically by mobile devices allowing physical items to almost become interactive, by providing information that is easily scanned like a website URL.
To make a simpler analogy, most people are familiar with Universal Product codes (known as UPC codes). Everything you buy at the grocery store (and almost any store these days) has one of those that the cashier will scan สร้าง qr code. The computer then immediately knows what the product is based on the code that it picked up.
Does anyone remember the days of grocery shopping and the cashier had to punch in the prices and codes for every single item you purchased. They had to memorize most of these in their head and if they forgot? They had to pick up the loud phone, make an announcement in the store asking for someone in that department to help them out.
Think of QR codes as UPC codes but instead they’re used in a much broader spectrum, not just to ‘identify’ products but to convey ‘information’ of some kind.
Basic QR Code Usage
The most basic (and popular use) of Quick Response codes is to display website information (a website address). Lets say you’re at a trade show and you’re walking by my booth. You want to find out more information about my company, so you open up your phone and start fumbling away trying to type in some long URL (that is on my display) into your browser, and off you go.
The other option would be for me to display a QR code (on my display), you take your phone and scan it just like cashiers scan items at the grocery store, and your phone automatically starts loading my website, how is that for convenience?
What about billboards outside on the street, or bus shelters while waiting for public transportation. You can place these little codes anywhere. People with free scanners on their phones (iPhones, BlackBerrys, Androids, Nokia, etc.) can quickly scan the code and find out more information, like opening up a website.
Whole Foods Market (popular in the US/Canada) uses these in their stores. I was recently sitting down to have a bite to eat at the one in Yorkville Toronto, and on the table where I was sitting was a table tent with two Quick Response codes.
It was obvious where they would take me if I scanned them, one would take me to their Twitter account, and the other would take me to their Facebook page.
If I was interested in checking out their Twitter or Facebook page, rather than opening up each respective app and going to the search function and typing in their name etc. (I likely wouldn’t, too much effort) I could pick up my phone, scan the QR code and automatically open each page!