Bat-Signal

The Bat-Signal is a spotlight used by Gotham City’s police to summon Batman. When there's trouble or a call for help, officers project the signal—usually a large, bat-shaped emblem—onto the sky or clouds. It acts as a visual cue, indicating Batman's presence or that his help is needed. The signal is a symbol of hope and alert, designed to be visible from a distance, and serves as a communication tool between the police and the superhero. It’s a fictional device that embodies Batman’s role as a vigilant protector.