Quick Response (QR) Codes are a type of 2D matrix barcode designed for fast readability and large storage capacity. QR Codes are used primarily in advertising materials as a way to track and encourage engagement.

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Mobile Deep Links from Emails

I'm looking to send an email to our users that directs them to our app. This uses a mobile deep link (custom URI scheme) that we have been successfully using for a while now. If the user presses the ...
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Good way to make loyalty card app

A friend asked me to make a loyalty card app for their store, so that the customer gets something for free for every n-th purchase. What is the best way to do this that can not be faked by the ...
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Integrate a QR code scanner in my Android app or call one via Intents?

For my current project I need to integratie QR code scanning in my app (which will be available for both Android and iOS). The QR code contains info that sets up the app for the rest of use case. For ...
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What is the optimal QR code size on screen?

One of our clients requests us to put a QR code to his contacts page, and I would like to get to know what is the optimal size for a QR code on screen. (in px) - considering that the average screen ...
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8answers
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Is my suspicion correct, that QR codes will be a short-lived standard with little effect?

We are all starting to see the square, scannable QR codes on billboards, advertisements, etc. I have been increasingly thinking that this standard will not last long. My logic is this: Any handheld ...
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Are QR codes used? Alternatives?

I know that QR codes are used a lot in some cultures (e.g. Japan) but are there any statistics on world wide and/or country specific usage? To be honest, I've never seen anybody use a QR code where I ...
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Are QR Codes good UX?

I have been falling in love with QR Codes, the little nerd in me jumps with joy at all the possibilities and even the action of interacting with physical things with my digital device is enthralling. ...