Size of a QR Code

[Muddy]

I have a customer that wants to add a discreet QR code to all their business cards. Is there a minimum or suggested size for the QR code? I'm assuming if it's too small it is unreadable

[dabob]

What we have found is that the more information in it the larger it has to be . . we run one out at various sizes and then test is with a smart phone to see if it can be read.

[Shane_A]

Best thing to start with is a tiny-url to minimize the info needed in the QR. We've gotten best results there, and it allows for a much smaller size QR-say .33" to .5", which can be seamlessly integrated into a design. Most readers now have gotten to the point where contrast doesn't have to be as pronounced as even 6-12 months ago, and the QR can become more of a design element than a static block which everything has to fit around.

[dabob]

The problem we have found is that we have to fit what the customer wants into the QR code . . . they don't like being told that all they can have is 24 characters or some arbitrary limit . . . but then its all a balancing act between what looks acceptable and still has the necessary information.

[csudman]

Is the code directing to a URL? Bitly or use a real qr system that offers shortening and tracking.

If its just text, test is till its small enough that you can't scan it. Then make it a bit bigger

[NTXSOL]

smart phones have gotten better in the last 6-12 months but remember to tell your customer its best to work around worst case scenario. You don't want to give a customer something they can't scan or they give to a customer that cant scan it. Using the latest and greatest phone isn't the best practice when testing qr codes.