Hyundai Hotel Delivery Droid (H2D2) is a robot specialized for room service at a hotel. When a hotel customer asks for room service, the hotel staff will enter the room number and authentication code on the touch display attached to the robot, load the item to be delivered, and then the robot will take the parcel to the requested destination. H2D2 is an IoT technology that allows users to exchange information with various facilities in the hotel, so it is also possible to move between floors of the hotel using the elevator.