Decryption attribute

From a technical point of view, the property IC card can only be used once after copying, and the problem that the second time will be invalid may be because the encryption or authorization of the IC card is not handled correctly during the copying process. To solve this problem, further technical discussion and investigation may be needed to determine the specific reasons.

Here are some possible solutions:

1. Re-copying: Try to copy the IC card again, and ensure that the encryption and authorization issues are handled correctly during the copying process.

2. Check the encryption: Make sure to use the correct encryption method when copying the IC card. If you use an encrypted IC card, you need to ensure that you have the correct decryption method or key.

3. Contact the property: If the above methods cannot solve the problem, it is recommended to contact the property management department or IC card for their support and help. They may provide more detailed technical information and solutions.

It should be noted that any operation involving copying and using IC cards should comply with relevant laws and regulations to ensure legality and security.