One of Batman’s gadgets that stands out is the Ultrasonic Bat Beacon, which has made appearances in “Batman Begins,” “Batman: Year One,” and various Caped Crusader stories. Despite its relatively small size compared to other tools in his arsenal, this device has proven to be quite effective in aiding Batman in taking down notorious villains such as Penguin, Two-Face, and Bane. When Batman needs backup and doesn’t have any sidekicks or Justice League members around, the Ultrasonic Bat Beacon emits a bat signal of its own, drawing swarms of the hero’s spirit animal into the fray for assistance.

The function of the device is simple: it emits an ultrasonic sound that attracts bats in large numbers. It can be fashioned as a handheld device similar to a garage door opener, attached to Batarangs, mounted on drones, or modified to be placed in the user’s shoe heel, making it very portable and capable of serving as a self-defense tool like pepper spray or a taser.

If this gadget can help Batman defeat formidable foes and ward off the GCPD’s finest, it has the potential to protect ordinary individuals seeking to get home safely. Additionally, it can also be used to deter unwelcome visitors, particularly those who overstay their welcome. Beyond its use in crime-fighting, the Ultrasonic Bat Beacon can be utilized for various purposes, such as coordinating bat-themed musical performances on TikTok or setting up a bat sanctuary. With its versatility, it could become a sought-after item if marketed to the right consumers.