Spyball

Spyball is a general term to describe a fictional device featured in comic books published by Marvel Comics. It is considered part of the mainstream Marvel Universe and is generally associated with the Moon Knight family of comic book titles. It first appeared in Marc Spector: Moon Knight #40 in July, 1992.

Description & History
The Spyball is an electronic surveillance device that is housed in the form of a human eyeball. It was utilized by Deadeye - a Latverian super-villain in service to Doctor Doom. The costumed Avenger known as Moon Knight fought up against Deadeye's team, the Sensor Squad, and was able to purloin one of the villain's spyballs.

After consulting with his Shadow Cabinet, Moon Knight had his agent Cover Girl approach the Latverian Consulate under the pretense of being a simple courier. She wore a Sony Walkman into the building, knowing that it would set off the security sensors. She used this as part of a Trojan Horse strategy to sneak the spyball into the embassy undetected.