Lost items anywhere in the world will be returned to their rightful owners household property register even if lost on an airline or aeroplane. Promotional Keyrings are popular corporate gifts. A thief does not like tagged or marked items, but a traveller does, as travelling is when people can lose property. A thief will go somewhere else if your household property or office items are marked or tagged or engraved, even if corporate incentive or corporate gifts. Property is often lost when travelling.
Fences sell stolen items.
Thinking about marking or tagging or engraving property to prevent loss, does not stop it being lost or stolen. Home security and safety is everyone's priority but thieves and cat burglars do not like it. Travellers often lose property. Lost Art treasures abound. Lost Corporate promotional products and events often find their registered owners with TRAKtag.