Did it make the plane?
Did it make the wrong plane?
Where is it now?
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"Trakdot™ Luggage is constantly monitoring the cellular network to determine it's city location. When you fly, Trakdot™ Luggage knows and goes to sleep. Upon arriving at your destination, Trakdot™ Luggage wakes up and reports it's new location. Depending on your preferences, a text-message or email is sent to you confirming that your luggage has arrived with you." (more)