Alarm system

An alarm system to be mounted in a vehicle, the alarm system comprising:

• a display to be used for displaying information for an in-vehicle apparatus;
• an imager capable of acquiring an image including a face of a driver;
• and
• a controller configured to, upon determining, based on the image, that a situation in which the driver looks at the display has continued for a predetermined time period or longer, display information regarding a travel condition of the vehicle on the display, wherein
• the information regarding the travel condition includes warning information to direct attention of the driver to driving, and
• the controller is further configured to display the warning information by interrupting an image currently being displayed on the display or by superimposing the warning information on the displayed image.