The magic of the RC522 library is how it simulates tags. Most versions include a parameter called or “Card UID” in the component properties.
Do not confuse the RC522.HEX simulation model with the Arduino firmware HEX file. The library model emulates the RC522 chip itself; the Arduino HEX runs your custom sketch. rc522 proteus library
Ensure no other components share the SPI bus lines without independent Slave Select (SS) lines. The magic of the RC522 library is how it simulates tags