In 1926, upon arriving in the United States for the first time, Newt Scamander's suitcase was opened at the customs. He activated the suitcase's "Muggle Worthy" switch to ensure that the Muggle customs agent did not see the wizarding items and magical creatures hidden inside of it.
When Hermione Granger ordered a Broomstick Servicing Kit for Harry Potter's thirteenth birthday while on holiday in France in 1993, she ruled out sending it to him via Muggle post, since the parcel might be opened at Customs. However, Harry sent Hermione a letter with his owl Hedwig around the same time, and thus she was able to attach Harry's birthday present to the bird before she flew away.
Behind the scenes
- It is unclear if Hermione is referring to the French customs (the direction générale des douanes et droits indirects) or the British customs (Her Majesty's Customs and Excise, as it would have been at the time), or perhaps even both agencies.
- Harry Potter and the Prisoner of Azkaban (Mentioned only)
- Fantastic Beasts and Where to Find Them (film)