1. ID card itself: Some ID cards may be damaged, scratched and folded during issuance or use, which will affect the identification and reading of ID card information by the card reader of the overhead camera.
2. Hardware failure of the card reader: such as failure of the card reader itself, such as sensor aging, poor wire contact, etc. , it will also lead to the inability to read information such as the validity period of the ID card.
3. Driving or setting problems: The driver or setting problems of the card reader may also lead to the inability to read the information such as the validity period of the ID card. For example, the old driver version and incorrect settings will affect the normal work of the card reader.
In view of these possible reasons, we can consider the following solutions:
1. For the problem of the ID card itself, you can try to use other ID cards to test whether the card reader of the overhead camera can normally read the expiration date and other information.
2. For the hardware failure of the card reader, we can try to replace the card reader or carry out corresponding maintenance.
3. For the problem of driver or setting, we can reinstall the driver or check whether the device setting is correct.
In addition, it should be noted that when using the aerial card reader, the equipment should also be kept clean and tidy to avoid dust and stains from affecting the normal work of the card reader.