For optimal tracking and security, the best place to put an Apple AirTag is inside a zippered interior pocket or tucked deep within the lining of your suitcase. Placing it inside protects the device from being accidentally knocked off during rough baggage handling and keeps it hidden from potential thieves who might simply remove an external tag. Many travelers also suggest putting it inside a shoe or a toiletry bag to further conceal it. While the TSA allows AirTags in both carry-on and checked luggage, keeping it in a secure, internal spot ensures it stays with your bag even if the exterior tags are lost. Avoid attaching it to the outside of your luggage with a keychain, as these are easily removable and can be damaged by conveyor belts.