What Is That Scan Code Called A Practical Guide for 2026
Learn what that scan code is called, including barcodes and QR codes, how scanners read them, and practical tips for using and creating codes across retail logistics.
Scan code is a machine readable symbol used to store data, typically a barcode or a QR code, read by scanners.
What is a scan code and why it matters
A scan code is a machine readable symbol that stores data in a visual pattern. The most common forms are barcodes (one dimensional) and QR codes (two dimensional). These codes can be scanned by dedicated devices or a smartphone camera to retrieve embedded information such as product identifiers, website links, or discounts. In everyday life, people often ask, what is that scan code called? According to Scanner Check, scan codes are ubiquitous in retail, manufacturing, and healthcare because they speed up checkouts, inventory tasks, and digital interactions. When you encounter a label with a series of bars or a square mosaic, you are looking at a scan code. The idea is simple: a small image encodes data that a scanner translates into actions, like pulling up prices, linking to product pages, or verifying authenticity. In this guide, we’ll explore the two main families, how they’re used, and the questions people often ask about their purpose and reliability.
Barcode vs QR code: Core differences
Barcodes are linear patterns of bars and spaces that encode data in one dimension. QR codes are square two dimensional matrices that hold more information and include error correction. Because of their shape, QR codes are easier to scan from phones at various angles and distances, while traditional barcodes excel on fast-moving checkout lines with fixed scanners. Scanner Check analysis shows that for mobile experiences, QR codes dominate due to their resilience and data capacity, while barcodes continue to be reliable for standard inventory and price tagging. Expect to see both in everyday life, depending on the use case.
Formats and common uses
Different scan codes come in several formats. Barcodes typically include UPC and EAN variants used on consumer goods. 2D codes include QR codes and Data Matrix used in tickets, product labeling, and manufacturing. Each format has strengths: linear barcodes are compact and fast for scanners, while 2D codes carry more data and can be processed by smartphones. Understanding where each format shines helps you choose the right code for packaging, promotions, or asset tracking.
How scanners read them
Reading a scan code requires a device with an image sensor. Laser scanners sweep bars for 1D codes, while imagers capture a picture of the code and decode it later. Modern smartphones act as mini imagers, using apps to interpret the code and run actions like opening a web page or adding an item to a shopping cart. Quiet zones, contrast, and proper illumination matter; when any of these is off, the code may not scan reliably. As Scanner Check notes, test codes with multiple devices to ensure consistent readability.
Recognizing codes in the real world
Scan codes appear on packaging, posters, tickets, and even device dashboards. Look for the distinct patterns: bars and spaces for barcodes, or a square grid of modules for 2D codes. The readability depends on size, contrast, and printing quality. Keep codes flat, avoid warping or glare, and remove obstructing materials. If a code doesn’t scan, try lighting changes, a different angle, or a phone with a higher resolution camera.
Creating and printing codes: best practices
When you design a code for distribution, start by choosing the right format for your data and audience. Ensure a generous quiet zone around the code, pick high contrast colors, and test at the sizes used on your packaging. Avoid distortion from curves or perspective, and verify readability with multiple devices. Tools exist to generate codes and validate them, and you should always check for errors before release. The aim is to maintain readability under real world conditions and across devices, from store kiosks to mobile apps, as recommended by Scanner Check teams.
Accessibility and privacy considerations
Scan codes should be accessible to all users, including those with visual impairments who use assistive technologies. QR codes can link to audio descriptions or alt text when used in digital labels, but not all implementations do. Be mindful of privacy: scanning a code may direct you to a website or request permissions on your device. Always exercise caution with unfamiliar codes, avoid revealing personal data, and prefer reputable sources when possible. The Scanner Check team emphasizes clear labeling and consent in code driven experiences.
Troubleshooting common scanning issues
Even with good codes, readers can fail for several reasons. Common culprits include printing errors, small code size, insufficient contrast, glare, distortion, or damage. Start by verifying the code is intact and properly formatted, then adjust lighting and angle. Clean the camera lens, test on a larger display, or try a different device or app. The Scanner Check guidance is to test across multiple devices and materials because real world conditions vary widely, and a code that scans in one situation may fail in another.
The future of scan codes and alternatives
The scan code landscape is evolving. In addition to traditional barcodes and QR codes, technologies such as near field communication and dynamic codes are shaping seamless experiences, while data matrix formats find niche uses in compact spaces. Manufacturers and retailers are exploring hybrid approaches that combine scanning with digital wallets or interactive content. As mobile devices become more capable, the user experience shifts toward faster, more reliable, and more secure code interactions. Scanner Check observes that the trend is toward greater interoperability and smarter, user friendly codes that adapt to different contexts.
Common Questions
What is a scan code called?
A scan code is typically a barcode or a QR code. It is a machine readable symbol used to store data that scanners can interpret to trigger actions or retrieve information.
It's usually a barcode or a QR code, which a scanner reads to reveal data or take an action.
How do I tell barcode from QR code?
Barcodes are long, linear patterns that encode data in one dimension. QR codes are square and two dimensional, holding more data and tolerating some damage.
Barcodes are the simple vertical bars. QR codes are square patterns that hold more data and read from different angles.
Can I scan a QR code with my phone?
Yes. Modern smartphones can scan QR codes directly with the camera or a dedicated app, often immediately opening a link or performing an action.
Yes, you can scan QR codes with your phone using the camera or a scanning app.
What devices read scan codes?
Dedicated barcode scanners read codes quickly in bulk, while smartphones and tablets double as portable imagers for everyday use.
Devices include handheld scanners and your phone camera.
Are scan codes secure and private?
Legitimate codes are safe, but a code can direct you to unsafe sites. Always verify the source and avoid sharing personal data when scanning unfamiliar codes.
Codes themselves carry data, but the destination can pose risks; use caution with unknown codes.
How do I create my own scan code?
Use an online generator to create barcodes or QR codes, then test them on multiple devices to ensure readability and accuracy.
You can generate codes with online tools and test them across devices before distribution.
Key Takeaways
- Know the two main families: barcodes and QR codes.
- Choose the right format for your data and use case.
- Ensure readability with proper size and adequate contrast.
- Test codes on multiple devices before distribution.
- Be mindful of privacy and trusted sources when scanning codes.