How to Prevent Cheating in QR Code-Based Inspections

Original article: https://cli.im/article/detail/2202

Compared with traditional paper-based inspection forms using manual records, QR code inspections allow uploading on-site photos, videos, real-time locations, and other content that paper forms cannot record. These elements help verify the authenticity of inspections and prevent falsification.

Based on this foundation, CaoLiao provides several anti-cheating features that can be combined according to actual needs:

1. Restrict Scanning to WeChat App Only

Inspectors can only scan codes using the WeChat "Scan QR Code" feature, preventing them from using pre-saved QR code images from their phone galleries.

Note: This restriction doesn't prevent scanning printed QR codes or images displayed on other devices.

2. Location-Based Scanning Restriction

The system captures inspectors' real-time locations during scanning. If they are outside designated areas, they cannot complete inspections. This creates a "geo-fence" allowing only personnel within specified areas to perform inspections.

Note: The minimum effective range is 100 meters around a location, making this unsuitable for precise positioning requirements (e.g., specific buildings) but effective for larger areas.

3. Real-Time Photo Capture Requirement

The image upload component in inspection forms can be configured to accept only photos taken in real-time. This prevents inspectors from uploading historical images from their galleries, though it cannot prevent photo re-shooting.

4. Automatic Image Watermarking

Similar to watermark cameras, every uploaded photo automatically receives system-generated watermarks containing:

• Timestamp
• GPS coordinates
• Inspector's identity

5. Blockchain Notarization for Tamper-Proof Records

This feature stores every inspection record on AntChain blockchain, creating an immutable "digital fingerprint" for each entry. Compared to image watermarks, blockchain records preserve more comprehensive data including:

• Text and image content
• Device model used
• IP address
• WeChat ID
• Other audit logs

As blockchain data is legally recognized as unalterable electronic evidence, each inspection record gains the same legal validity as physical documents. While most routine inspections don't require legal evidence, this feature acts as a "surveillance camera" that permanently records all inspection activities. The mere awareness of this permanent recording significantly deters fraudulent behavior.

6. Implementation Strategy

These anti-cheating measures primarily focus on "monitoring" rather than "restriction." Managers can combine multiple monitoring approaches to effectively prevent fraud while maintaining:

• Controllable management costs
• Simple operation for inspectors
• Smoother transition from paper-based to digital inspections

For further questions about inspection fraud prevention, feel free to leave comments or inquiries below!