Yes, you should absolutely put a luggage tag on your suitcase, and in 2026, it is recommended to have both an external physical tag and an internal contact sheet. The external tag is the first line of defense; if your bag is separated from its digital airline routing (the sticky barcode), the tag allows ground handlers to identify the owner immediately. For cruises, a specific paper or plastic tag provided by the cruise line is mandatory for "checked" bags to ensure they reach the correct stateroom. Beyond basic identification, many travelers now use "smart" tags like Apple AirTags or Tile trackers inside their bags. However, a physical tag with your name, phone number, and email address (avoiding your full home address for security reasons) remains essential. If an external tag gets ripped off in the automated sorting belts, having a second tag or a business card inside the suitcase allows the airline's "Lost and Found" department to open the bag and find your contact info, significantly increasing the chances of a successful reunion with your belongings.