An Admonitor was a magical bracelet or cuff that monitored the magical activity of the wearer. In the 1920s both the British Ministry of Magic and the Magical Congress of the United States of America employed these against suspects under surveillance.
1. Fantastic Beasts and Where to Find Them
User: Porpentina Goldstein
“This bracelet was an admonitor owned by Tina Goldstein in December 1926. It would track every spell she cast. She was forced to wear it as a result of her recklessness in her attack on Mary Lou Barebone”
2. Fantastic Beasts: The Crimes of Grindelwald
User: Albus Dumbledore
In the summer of 1927, Torquil Travers placed a pair of admonitors on Albus Dumbledore in response to the latter’s apparent unwillingness to fight Gellert Grindelwald for the Ministry.
Bonus:
Those admonitors were later removed from him by Theseus Scamander in order to allow Dumbledore to openly participate in the conflict with Grindelwald.
Dat Tina’s expression when Theseus removed the bracelet seems like “oohh Dumbledore, we had been in the same position forced wearing that ”
My mind is literally blown right now , I how dare they do that to Tina !!!!
After being demoted, she’s also forced to be monitored under surveillance like a criminal. Poor Tina :(