Hachikey is a natural language search and facial recognition tool that helps users efficiently search for videos and images. It allows users to search for scenes, objects, and people in videos using text queries, and even search while playing the video. Users can locally index their videos and images, with a single indexing process enabling immediate search capability. Hachikey also offers facial recognition, allowing users to search for themselves or their loved ones' faces within an entire image collection. The tool operates entirely offline, ensuring user privacy.