Mint Seal from Mintpass applied the advanced seal to prevent misuse. It designed with a locking case for the seal side and a combination lock at the other end to unlock and print the seal.
There is a red dot on the body of the seal which is the level where the secret numerical combination should be aligned. After setting up with the password, turn the knob 180 degrees to come out the seal from the casing. After finishing with printing the seal, turn back the knob and disarrange the security number.
