Enhancing the accessibility of QR codes involves several strategies to improve visibility, clarity, and usability. Key methods include enlarging the code size, using high-contrast colors, placing QR codes in easily accessible locations, providing clear instructions, and ensuring that linked content is accessible to all users.

Businesses integrate QR codes into their operations to enhance brand visibility and customer engagement. It is possible to place QR codes effectively in various places, such as sales points, storefronts, packaging, and promotional materials, but placing them on billboards requires careful consideration of factors such as visibility, weather resilience, and integration into overall design aesthetics. Billboard QR codes are effective tools for providing people with convenient access to online information.

How to Make QR Codes More Accessible and Increase Scans

To make QR codes more accessible, consider the following list.

• The QR code size: Small-size QR codes are challenging to spot for individuals. Enlarging the QR codes’ size makes them more noticeable. The size of a QR code is determined based on the distance from which it is scanned. A visible QR code must be at least 2 cm by 2 cm (0.8 in by 0.8 in), excluding the quiet zone. Adjusting the QR code's size relative to the viewer's distance is crucial. A 10:1 distance-to-size ratio is recommended. For instance, a QR code must be at least 5.08 cm (2 in) in height and width if the scanner is 50.8 cm (20 in) away. The minimum QR code size for digital applications is 6.35 cm by 6.35 cm (16 in by 16 in) at 72 DPI(dots per inch).
• The QR code's color: Avoid changing the color scheme of the QR code. Changing the QR code's color is ill-advised because it renders the QR code difficult to scan or, worse, entirely unscannable. Remember, the background color of the QR code must consistently be darker than the background color. Ensure there is adequate contrast in the color scheme of the QR code. Keep clear of light-colored schemes, as QR code readers struggle to detect codes with lighter tones.
• Easy-to-scan locations: The QR code placement in a physical environment is crucial in making the QR code accessible. Ensure that the QR code is positioned in a secure and easily accessible location on the medium, facilitating effortless scanning. Avoid locations that require customers to perform additional effort, such as bending or stretching, to scan the code. If you want to know what are the scanning problems, check the related blog in the link. 
• A clear call-to-action (CTA): Simply attaching a QR code to marketing materials or other content is insufficient for engaging the audience. Therefore, include a distinct call-to-action (CTA) alongside the QR code. A call-to-action (CTA) is a concise statement or directive that motivates individuals to take a desired action, thereby fostering continued engagement with the brand. CTAs effectively grab attention and provide a quick overview of accessed content. Some individuals hesitate to scan a QR code if they are uncertain about its contents. Including a CTA clarifies the content and alleviates any concerns readers have.
• The destination URL of the QR code: Including the destination URL of the QR code is a commonly overlooked best practice. The destination URL of the QR code ensures that the link to the content associated with the code is indicated alongside the code itself.
• Thermal printing technology: Utilize thermal print technology for physical QR code printing on products or marketing materials like posters or flyers. Thermal printing, employing heat from a Printhead, offers superior quality and efficiency compared to traditional inkjet or laser methods. Thermal printing boasts high-quality prints for accurate scanning, fast printing speeds, low running and maintenance costs, and silent operations.
• Business practices: Businesses use QR codes to make their brands and products more visible and accessible to people. QR codes provide information about products, services, and brands, so customers scan the codes and access the information conveniently. A successful QR code marketing campaign involves strategic planning and adherence to best practices. Examine successful campaigns like Heinz's eco-friendly packaging, Verizon's referral program, Diesel's Facebook-like campaign, L'Oréal's taxi promotion, and Kellogg's cereal promotion.

Can You Put a QR Code on a Billboard?

Yes, you can put a QR code on a billboard. Putting a QR code on a billboard enables individuals passing by to scan the code and access online details about the advertised product or service. The QR code on a billboard must be positioned at a level that is easy to scan and ideally located in areas with high foot traffic. The billboard’s location is significant. For instance, roadside billboards are not as effective because people are unlikely to stop their cars to scan a code.

Billboards at stations or waiting areas where people easily scan the code are more effective. The QR code must resist weather conditions like rain, sun, and snow, affecting scalability. Durable materials must be used to print the QR code. It is important that the QR code matches the billboard's design and serves a functional purpose. A billboard's graphics and message must complement each other while being noticeable enough to attract attention.