This is also why chip implants from eg Dangerous Things with MIFARE were desirable: you could clone old MIFARE chips this way using some tools. Sadly, neither

This is also why chip implants from eg Dangerous Things with MIFARE were desirable: you could clone old MIFARE chips this way using some tools. Sadly, neither my gym or work access card were cloneable even though they are MIFARE Classic. So I did not end up getting an implant.