The Spider-Tracer are small trackers designed by Tony Stark to resemble spiders. When fired, the Tracer is capable of crawling to its target and remain hidden, while emitting a signal that Spider-Man's Web-Shooters can then track.
Tracking Adrian Toomes' Crew
Peter Parker began investigating on his new adversary. He told Ned Leeds about his encounter with Vulture and the power core that has been left behind during the chase. After they spend time examining the power core, they encountered Herman Schultz and another thug looking for the missing core in school. After convincing a reluctant Leeds to stay put at safety, Parker followed them during their search and planted a tracker on Shultz. Parker and Leeds began following the gang's movements and learned that they were heading to Maryland.
Spider-Man's Tech Web-Shooters demonstrates the ability to launch small GPS trackers shaped like spiders that can crawl on there own, which Spider-Man can track via his suit's holographic display. Using these trackers, Spider-Man can find out where criminals are located and their movements.
- In the comics, Spider-Man originally developed a small tracking device to follow the signal from his Spider-Tracers, before he later modified them with a special signal that reacts with his Spider-Sense within a certain radius to let him know if his target is nearby.