QR codes are becoming quite popular, especially in advertising.

• Qr Code Generator
• Gimp Qr Code Generator Codes

But QR codes have a security flaw – it’s not too difficult to turn one QR code into another with just a bit of OHP film and some Tippex.

The Native Barcode Generator Plug-In creates bar-codes in FileMaker without the installation of additional fonts or other components. Supported symbologies include Code 128, GS1-128, Code 39, Codabar, Interleaved 2 of 5 and MSI. Qr codes are like bar codes only new and cool, they're slowly making their way in to life as a way of sharing information, but they're also indistinguishable from each other unless you're really bored. This instructable shows you how to put an image inside a QR code and make it still readable. This instructable works with both Gimp and Photoshop, the instructions for Gimp are exactly the same. GIMP is an acronym for GNU Image Manipulation Program. It is a freely distributed program for such tasks as photo retouching, image composition and image authoring. GIMP is written and developed under X11 on UNIX platforms. But basically the same code also runs on MS Windows and Mac OS X. By bolotoved Apr 8. You now have 4 addition secret code makers to pick from. Just remember when you send your friend your secret code you tell them which cipher to pick, the normal one, or one of the ones from below (heart, star, clover or flower).We did this to add an extra layer of secracy for you.

Obviously I don’t support vandalism so I’ll be using this fake Google poster that I made as an example.

You will need:

• A mobile phone with a QR code scanning application. I used Barcode Scanner.
• The free GIMP image manipulation software.
• Clear overhead projector (OHP) film.
• Tippex (or some way of printing in white).

Scan your target QR code and use the free QR code generator to generate a copy of the original code. You will also need to generate the QR code that you want to replace it with.

The target QR code is on the left and the replacement QR code is on the right.

Open both images in GIMP. Copy the replacement QR code into a new layer on top of the target QR code and change the layer mode to “Grain Extract”.

The grey areas are the areas where the two images overlap; there’s quite a lot of grey here because a lot of the information contained in the two codes is the same.* Black and white areas indicate differences between the two images; black pixels appear where the original is white and the replacement is black and vice versa.

Select the grey areas and remove them from the image, and then invert the colour so that black pixels appear where the original is white and the replacement is black; and white pixels appear where the original is black and the replacement is white.

The chequered areas indicate that the image is transparent. It is important that all the images you save during this process are saved as PNGs which, unlike JPEGs, are lossless and support transparency.

Now you need to print your overlay (at the same size as the original) onto transparent OHP film. The vast majority of printers are unable to print in white ink, but as it’s only the contrast between black and white that is important, you can replace the white with yellow for printing.

The overlay, ready for printing, is on the left, and the result of overlaying on the right.

If you’re using opaque yellow ink (most printers aren’t able to do this) then your overlay is ready. Otherwise you will need to replace the yellow pixels with white by using a correction fluid such as Tippex.

Now all you need to do is place your overlay on top of the original QR code to create your new replacement QR code. If you know what you’re doing you can download the GIMP .XCF file I created in the course of this post.

* Both codes have the same position and alignment indicators, the same version and timing information, and both contain the same “http://www.” data.

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Create a transparent, scaleable QR Code in printable vector format and download as EPS file.

Use Dynamic QR Codes

• Get Statistics who scanned your QR Code
• Change the URL of the QR Code anytime

Hint: UseApp QR Codes

Create a QR Code that does a device depending redirect.For example: If you have an App in the Apple and Google Play Store you need just one QR Code.Users with an iPhone or iPad get redirected to the Apple Store and Android devicesto the Google Play Store by scanning the same QR Code.

Use our Mobile Coupon Generator

Create a mobile coupon for your customers.They can show the coupon in your shop to get a free drinkor a discount on their purchase.The coupon is shown on the mobile phone's browser, you don't need an extra app.

Caution: vCard QR Codes have limited space and they are static

Instead using a static vCard create a free Mobile Business Card.You can add unlimited details like your logo, links to your social networks, YouTube videos and much more.And mobile business cards are dynamic - when you change your contact information, you don't have toprint your QR Code again.

Digital Business Cards for Agents

Create a digital business card for real estate agents.On top of your contact data you can add your logo,links to your social networks, YouTube videos and much more.

We can shorten and track URLs too!

Qr Code Generator

You can create trackable QR Codes on our platform that will automaticallyshorten your target URL.Moreover you can track who, where and when your QR Codes have been scanned.

Geo-Targeting

When you are a multi-national corporation, you may want todeliver different content to specific countries.With Geo-targeting you can create QR Codes with Multi-URLsthat redirect the user to a specific website dependingfrom which country he is scanning the QR Code.

This static QR Codeis free for commercial use and does not expire.

FAQs

How can I view my downloaded EPS QR Code?

You can view the QR Codes in EPS format in Adobe Illustrator or with thefree EPS Viewer software

I have already created and printed my QR Code. Can I change the URL of my QR Code?

In a static QR Code the target URL is hard coded andcannot be edited retrospectively!With a dynamic QR Codeyou can edit the target URL anytime and avoid situations like this:

We created a QR code for a YouTube video that was then printed on a huge batch of brochures.Today one of our employees accidentally deleted the YouTube video which means we now have a lotof brochures in circulation with non-working QR codes.Is there any way you can change the URLs for us so they link to different YouTube videos?It would save us a lot of trouble as we’re in the middle of critical campaign launch.

If you are using static QR Codes we cannot do anything in that case.Instead use Dynamic QR Codes whenever possible.

Why only text is shown in the QR Reader and I'm not redirected to the website after scanning?

Gimp Qr Code Generator Codes

Some QR Code readers only recognize a link if a protocol http://is placed in front of the URL.If you create a QR Code with the URLmysite.com without a protocol some readers will interpret this as plain text.Always create links with the protocol e.g. http://mysite.com infront of the URL to make sure that every reader redirectsyou to the desired website immediately after scanning.