QR codes: Quick and convenient, but not without limitations. Yes, you can reuse a code multiple times, but keep in mind:
In short, QR codes are useful when used wisely. Consider design, expiration dates, and errors to ensure a great user experience and successful marketing campaign.
The Functional Principle of QR Codes
QR codes are two-dimensional barcodes that contain black and white pixels. These codes are designed to be scanned by smartphones or QR code readers, which decode the information contained in them. The functional principle of QR codes is that the black and white pixels encode data in a compact and efficient manner. QR codes can contain various types of information, such as URLs, text messages, contact information, and Wi-Fi login credentials.
The Scanning Process of QR Codes
QR codes can be scanned by smartphones or QR code readers. When the QR code is visible in the view of the camera, it is decoded several times per second. The scanning process involves the camera detecting the QR code, decoding the information, and displaying the content contained in the code. The scanning process needs a clear and unobstructed view of the QR code, and requires the QR code to be in focus.
Can QR Codes be Scanned Multiple Times?
You may have noticed that you can’t scan the QR code over and over again. The reason is that when the QR code is visible in the view of the camera, it is decoded several times per second. It isn’t a good idea to be bombarded with codes that are often. QR codes are not designed to be scanned multiple times. Once a QR code is scanned, the data contained in it is usually consumed or processed in some way. Scanning the same QR code again could lead to errors or confusion.
Reasons for Single-Use QR Codes
There are several reasons why QR codes are often designed to be single-use. One reason is security. QR codes are used for secure transactions, such as payment processing, and it is important to prevent unauthorized access to the information contained in the code. Single-use QR codes reduce the risk of fraudulent transactions and ensure that the code is used only once. Another reason is tracking. QR codes are often used for marketing campaigns, and single-use QR codes help track the success of the campaign by counting the number of scans.
How to Generate Temporary QR Codes
If you need to generate temporary QR codes for a specific purpose, such as an event or a marketing campaign, there are several ways to do so. One option is to use a QR code generator that allows you to set an expiration date or a limit on the number of scans. This ensures that the QR code is only used for the length of the campaign and prevents unauthorized access to the information. Another option is to use a unique QR code for each user or attendee, which can be generated dynamically using a database or API.
Tip:
When generating temporary QR codes, it is important to consider the purpose and the audience of the campaign. QR codes that are too complex or difficult to scan may not be effective, and QR codes that are not secure enough may lead to fraud or data breaches.
Alternatives to QR Codes for Multiple Scans
If you need to generate codes that can be scanned multiple times, there are several alternatives to QR codes. One option is to use NFC tags, which are small wireless chips that can be embedded in physical objects. NFC tags can be scanned multiple times using a smartphone or NFC reader, and can contain various types of data, such as URLs, contact information, and payment processing. Another option is to use augmented reality (AR) codes, which are visual markers that can be scanned using a smartphone camera. AR codes can contain animations, videos, and interactive content, and can be scanned multiple times without any issues.
Tip:
When choosing an alternative to QR codes, it is important to consider the compatibility of the technology with your audience’s smartphones or devices. NFC requires a compatible smartphone or tablet, while augmented reality may require a special app or software.
