Finding Hidden QR Codes: How to Conceal a QR Code?

A hidden or camouflaged QR code on an image makes it difficult for users to spot at first glance, creating the impression that it’s concealed. Placing such a code on printed materials or digital templates is an innovative way to engage your audience, maintaining their interest and involvement. Hiding QR codes in printed materials or online advertisements increases user curiosity, leaving a positive impression of your content. As a result, the audience will engage more with your brand, eager to find the QR code and discover what information it reveals. If you need ideas for this, you're in the right place. Learn how to create a QR code with the best QR code generator and seamlessly hide it.

Methods for Concealing a QR Code

There are several methods for hiding a QR code (not recommended if you’re creating an electronic business card). Check out the examples below for inspiration.

Concealing a QR Code on an Image

You can camouflage your QR code as part of an image. Since visual QR codes are customizable, you can blend them into the overall picture using the same color scheme. This way, you maintain the image's aesthetic, and users won’t notice the hidden QR code. This method is suitable for marketers organizing promo code hunts. They can hide the QR code on product packaging, and only the lucky ones who find it will win amazing prizes.

Blending QR Codes with Artworks

Artists can use QR codes to convey information about their works. Some have already incorporated QR codes into their pieces to share details about materials, inspiration, and artist information. But did you know you can integrate QR codes directly into artworks? In the study "Aesthetic QR Codes Based on Two-Step Image Blending" by Zhang et al., module and pixel-based blending was combined, preserving the error correction level.

Invisible QR Code Using Nanotechnology

Counterfeit money poses a threat by devaluing real currency and causing inflation. Hence, installing QR codes for additional security is essential. American researchers have created hidden QR codes on banknotes using nanoparticles. These QR codes are visible under infrared laser light and can be scanned by smartphones. They used blue and green fluorescent inks, visible only under infrared light. This method is currently inaccessible for most, but if you have similar resources, you can try creating an invisible QR code.

Printing on Hidden Areas

The best way to hide a QR code is to genuinely conceal it. Don’t just change its colors to blend with the surroundings; hide it where no one can see it. This method is great for scavenger hunts and games, especially for companies promoting their products. You can print the code under a product label, so only those who remove the packaging can scan the QR code. This trick can be part of a larger advertising campaign.

Real-Life Examples of Hidden QR Codes

Here are some real examples of how QR codes can be subtly integrated into materials.

Tony Taj's Horizon Painting

Tony Taj, an artist from Seattle, uses digital technology in his landscape paintings with horizon lines. His paintings feature city buildings with hidden QR codes among them. He calls this technique Ambient Media Portal (AMP), aiming to combine traditional paintings with digital technology to tell deeper stories.

"Portal to the Unknown" by Yiying Lu

Yiying Lu, a Chinese artist residing in San Francisco, introduced QR codes hidden in her painting collection "Portal to the Unknown." Three works contain QR codes that, when scanned, lead to Lu's website showcasing more of her works.

QR Codes in Marvel Series

Marvel often hides QR codes in its series, waiting for viewers to notice them. In the series "Moon Knight," QR codes are hidden in the first, second, and fifth episodes of the season, each leading to a free digital copy of the comics. In the first episode of "Ms. Marvel," a QR code on an ATM redirects to a 2014 web comic. In one episode of "She-Hulk," a QR code on a wall leads to a website with access to a 1980s comic.

QR Codes in Video Games

The updated version of the game "Portal" features hidden QR codes. Scanning one reveals a secret code for a new cube and changes the game’s display. In the video game "High on Life," a QR code on a cereal box leads to the Squanch Games website, where players can access other games.

Music Videos with QR Codes

In the music video "Left and Right" by Charlie Puth and Jungkook of BTS, a QR code is hidden. Many thought it was just a prop, but when scanned, the code leads to Puth’s official website where fans can order a limited edition CD of the song.