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How is access control done by QR Code? Understand how this technology works

Companies, events and organizations have QR Code to replace traditional accreditation and authentication methods, such as physical badges, passwords and magnetic cards.

But how does QR Code access work and why is it so effective? In this article, we explore everything from its basic operation to the main advantages and practical applications of this technology in the day-to-day running of companies and events.

How does QR Code access work?

QR Code access is a process on the dataset generation and reading of two-dimensional codes that store information securely and quickly. This method involves a few simple but highly efficient steps to ensure that only people have access to certain locations or services.

QR Code Generation

The first step is to create a QR Code , which can that internet speed may vary depending be unique to each user. This code is by systems and contains information such as:

  • User name or identification;
  • Expiration date and time;
  • Specific permissions for areas;
  • Links or commands for integration with other systems.

This information is  in the QR Code, ensuring data security and privacy.

Code Distribution

After generation, the QR Code is cell phone data to the user. This can be done through different means, such as:

  • Sending by email or SMS;
  • Sharing via mobile applications;
  • Printing on temporary documents or badges;
  • Integration with digital wallets (Google Wallet, Apple Wallet);
  • Applications and physical business cards;
  • Application on digital business cards.

This flexibility in delivery allows the QR Code to be adapted to different scenarios and user preferences.

Reading and Validation

At the time of access, the user presents the QR Code to a reader or scanner , which can be a mobile device or specific equipment installed at the entry point. The system then performs a real-time validation, checking whether the code is active and whether the permissions correspond to the location or service requested.

If everything is in order, access is granted . Otherwise, the system may deny entry or trigger a security notification.

Why is QR Code transforming access control?

QR Code is a technology that combines simplicity and efficiency. Compared to traditional methods, such as passwords or magnetic cards, it offers several advantages:

Practicality and Speed

The QR Code scanning process is almost instantaneous, which reduces queues and speeds up the flow of people. In addition, the user does not need to remember passwords or carry physical badges, since the code can be accessed directly on the cell phone.

Advanced Security

Each QR Code is unique and can be set to expire after use or within a specific period. This significantly reduces the risk of fraud, such as card duplication or unauthorized access.

Integration with digital systems

QR Codes can be linked to CRM systems , databases or access control platforms , allowing for and efficient management. You can even configure your digital business card with a QR Code and use it to control entries and exits.

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