This object is designed to hold a key, preventing unauthorized duplication through visual inspection. When a serial-numbered security tag is inserted through both the key\'s hole and the holder's hole, the key can only be used if the tag is cut. Therefore, it will be known if the key may have been used.
---
Imported from Thingiverse: https://www.thingiverse.com/thing:3584
Original creator: charlespax