PixQR
Overview
One-Time Creation refers to a static QR code generation mode in PixQR where the encoded content is fixed at the moment of creation and cannot be altered afterward. This mode ensures that the QR code's destination or data remains immutable, offering predictable behavior for users and developers alike.
It is commonly used in scenarios where a stable, unchanging link or data payload is required, such as in print materials, marketing campaigns, or compliance-sensitive applications. Unlike dynamic QR codes, which can be updated post-creation, One-Time Creation provides a fixed endpoint that cannot be modified, even by administrators with access to the PixQR dashboard.
Why It Matters
For developers and site operators, One-Time Creation ensures that a QR code’s target remains consistent throughout its lifecycle. This consistency is crucial in environments where tampering or unintended changes could lead to incorrect redirects, broken links, or security vulnerabilities.
In production workflows, especially those involving branding, compliance, or analytics, the immutability of One-Time Creation prevents accidental or malicious updates that could compromise data integrity. It also simplifies debugging and audit trails, as developers can rely on a fixed data source.
How It Works
When a QR code is created in One-Time Creation mode, PixQR encodes the data into a static structure. The system stores the encoded data at the time of creation and does not allow further modifications to the payload or redirect destination. The resulting QR code is generated with a fixed hash or identifier that represents the original input.
- The encoded data is stored in a secure, read-only format within PixQR’s internal database.
- Updates to the original URL or data are not propagated to existing QR codes in this mode.
- Once generated, the QR code’s behavior is locked and cannot be modified through the dashboard or API.
- Scan tracking and analytics for One-Time Creation codes reflect only the original data, with no changes over time.
- This mode is ideal for applications where consistency and integrity are more important than flexibility.
Quick Reference
| Item | Purpose | Notes |
|---|---|---|
| Creation mode | Selects static, fixed QR code behavior | Cannot be changed post-creation |
| Encoded data | Fixed content payload | Stored as immutable hash |
| Redirect destination | Fixed URL or resource | Unchangeable after creation |
| Scan tracking | Analytics based on original data | History does not update |
| API support | Creation and retrieval only | No update endpoint for One-Time codes |
Basic Example
PixQR Example QR
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This example demonstrates how to create a One-Time Creation QR code using PixQR’s API with a fixed URL.
POST /api/v1/qr-codes
{
"url": "https://example.com/product/12345",
"creation_mode": "one-time"
}The creation_mode field is set to one-time, indicating that the QR code will not allow any updates post-creation. The url is encoded and stored as a static value.
Production Example
In a production environment, One-Time Creation is used for generating marketing materials, event tickets, or branded assets where consistency is essential. This example shows how to configure a QR code with validation and error handling.
POST /api/v1/qr-codes
{
"url": "https://company.com/landing-page",
"creation_mode": "one-time",
"branding": {
"logo": "https://company.com/logo.png",
"color": "#000000"
},
"analytics": {
"track_scans": true
}
}This configuration ensures that the QR code is immutable, uses a consistent brand identity, and tracks scans without risk of modification. The payload is validated and stored securely to maintain integrity.
Common Mistakes
- Assuming that One-Time Creation allows updates after generation, leading to confusion in analytics or user experience.
- Using One-Time Creation for dynamic content that may change over time, such as promotional offers or event details.
- Not validating the input URL or data before creating a One-Time QR code, resulting in broken links or invalid payloads.
- Misunderstanding the difference between One-Time and Dynamic modes, causing unintended behavior in workflows.
- Ignoring the lack of API endpoints for updating One-Time codes, leading to unnecessary API calls or errors.
Security And Production Notes
- One-Time Creation codes are inherently secure because they cannot be modified, reducing the risk of tampering or phishing.
- Ensure that the original URL or data is validated before creation to avoid invalid or malicious content.
- Use HTTPS endpoints for all One-Time QR code destinations to maintain secure communication.
- Implement access controls to prevent unauthorized creation of One-Time codes, especially in shared dashboards.
- Monitor analytics for unexpected scan patterns that could indicate misuse, even though the code itself is immutable.
Related Concepts
One-Time Creation is closely related to other QR code modes and operational practices. Dynamic QR codes allow for updates post-creation, whereas One-Time Creation locks the content. Static QR code generation is a broader category that includes both modes. Analytics and tracking also differ between these modes, as One-Time codes provide a fixed data point for analysis. Lastly, branding and compliance requirements often influence the choice between static and dynamic QR code behavior.