In order to troubleshoot issues with RFID cards, we must understand all the potential reasons for a card not working. The below guide lists potential reasons - listed from most to least common.
Software or System Errors
In many cases, the issue may be related to the software or system managing the RFID cards. Updates or changes to the system can inadvertently cause compatibility issues, leading to card failures. Regularly updating and maintaining the system software can help prevent such errors
Physical Damage
A common reasons for a 125kHz RFID card to stop working is physical damage. These cards contain a small antenna and a microchip embedded within the plastic. If the card is bent, scratched, or exposed to extreme conditions, the internal components can be damaged, rendering the card non-functional. Regularly inspecting the card for visible signs of wear and tear can help identify physical damage early
De-magnetization
Although RFID cards do not rely on magnetic strips like traditional credit cards, they can still be affected by strong magnetic fields. Exposure to such fields can disrupt the card's ability to communicate with the reader. Keeping RFID cards away from magnets and electronic devices that emit strong electromagnetic fields can prevent this issue.
Deactivated or Expired Card
RFID cards can be programmed with expiration dates or can be deactivated for security reasons. If a card suddenly stops working, it is worth checking if it has been deactivated or reached its expiration date. Ensuring that the card's status is active in the system can resolve this issue.
Reader Malfunction
Sometimes, the problem may not lie with the card itself but with the RFID reader. A malfunctioning reader can fail to detect or properly communicate with the card. Regular maintenance and testing of RFID readers can ensure they are functioning correctly and help identify if the issue is with the reader rather than the card
Interference from Other Devices
RFID systems can be susceptible to interference from other electronic devices operating on similar frequencies. Devices such as mobile phones, Wi-Fi routers, and other RFID systems can cause signal interference, leading to communication failures. Ensuring that the RFID system is installed in an area with minimal electronic interference can mitigate this problem.
Conclusion
Understanding the reasons behind a non-functioning RFID card can help users quickly diagnose and resolve the issue. By adopting best practices for software management, handling cards with care, and being mindful of environmental factors, users can significantly minimize the risk of problems. Taking these proactive steps will enhance the reliability and performance of RFID systems.