In Japan, an intercom, known as intahon, is a standard fixture beside the front door of houses and apartments, used by visitors to announce themselves before entry. The two-tone electronic chime has become a familiar part of everyday life there, and clips of it are now shared online by creators who want an instantly recognisable doorbell for home, travel, and slice-of-life videos. Its appeal lies in its politeness and clarity: it signals arrival without sounding like an alarm, which is why it continues to appear in edits, reaction clips, and short-form videos.