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Invented in 1994 by the Japanese company, Denso Waze. Its purpose was to track vehicles during manufacturing and it was designed to allow high-speed component scanning.

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1. Micro QR Code
2. IQR Code
3. SQRC (Secure Quick Response Code)
4. Frame QR Code

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1. Phone number
2. Contact number
3. Email address
4. Images
5. URL
6. Location data

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Anywhere as long the surface of product or anything are smooth and readable (the picture of QR Code must details and not low picture quality.

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There are many alternative for examples : Blipper, Data Matrix, Google Goggles, Microsoft Tags and Maxi Code

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1. QR Codes are small harmless patterns printed onto a surface (billboard, poster etc) and their intent is only to help you get data from a printed medium to a digital medium. They cannot easily be read with the naked eye so they are particularly difficult to manipulate after publications.
2.  How secure are QR codes really depends on how secure the QR code generator is. You can find several generators that implement measures for security, including protection from hacking like QR Stuff and Password Protection.

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Easy and can be read by any smartphones that has camera which mean no special hardware and zero cost to user.
These are benefits for entreprenuer:

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Yes sure it is free!

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1. Transportation
2. Logistic

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GIVE EXAMPLE ABOUT THE MOST CREATIVE USES OF QR CODES?

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GIVE EXAMPLE ABOUT THE MOST CREATIVE USES OF QR CODES?

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Improvement in marketing on our business card.

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How to make your business card better with QR Codes