Home Assistant scans the tag-IDs by default, so you use them as a trigger, with little extra effort for each new card. "When card with ID X is detected, do Y".

Home Assistant scans the tag-IDs by default, so you use them as a trigger, with little extra effort for each new card. "When card with ID X is detected, do Y". I have something similar setup in my home office for my music and I just use the ID, no need to complicate it any more than it already is.