Sherlock Search is a web-based reverse face search tool that helps users quickly locate the presence of specific faces on public networks. Key advantages include ease of use, requiring only the upload of one photo and a single payment, without the need to create an account, to obtain possible matching results and public source links. The product background is to meet user needs for face image tracing. The price is $2.99 per search, no subscriptions, recurring charges, or membership tiers. The positioning is to provide users with convenient reverse face search services to help them review and confirm face information.