Here is a smart piece of luggage that recognizes its owner and automatically follows you. The Airwheel SR3 has camera, radar, and sensors with SLAM to identify its owner, auto follow, and avoid obstacles. The SR3 uses Bluetooth combined with ultrasonic and radar sensing to avoid obstacles.
The suitcase comes with a removable battery and audio alarm, which lets you know when there is a distance of more than 3 meters between you and your things. More information is available here.