A head mount display (HMD) device according to one embodiment comprises a camera unit configured to capture an image at a front of the HMD device, a distance obtaining unit configured to obtain a distance between the HMD device and an object in the front of the HMD device, a communication unit configured to transmit and receive data, a display unit configured to display visual information, and a processor configured to control the camera unit, the distance obtaining unit, the communication unit and the display unit, wherein the processor is further configured : to recognize a face from the image, to receive personal data corresponding to the recognized face, to obtain, from the received personal data, personal information and period from a latest date when the face was lastly recognized to a current date when the face is currently recognized, to display the personal information when the period is longer than a first threshold period, and control a quantity of the personal information to be displayed based on a distance between the recognized face and the HMD device, and the period, and not to display the personal information when the period is shorter than the first threshold period.