Invisibility Device - Transformers Wiki

Devised and built by the young scientist Sarah Sanders, the Invisibility Device would prove to be a major boon to either the Autobots or the Decepticons if either side were to gain possession of it. The device can be incorporated into a space craft or an individual Transformer to render them invisible to the naked eye. Human ingenuity has only taken the technology so far, however, and so the device still falters occasionally, revealing that which it hides at regular short intervals.

Fiction

The Invisibility Factor

Sarah Sanders feared the destructive potential her invention could bring to the world, and so sought to destroy it. As she flew away from her lab and over a desert, her ship broke down, forcing her to land. In a series of possible adventures, Sarah encountered either the Autobots or the Decepticons or both, who saw great strategic potential in her invention. Despite the Autobots' insistence of wanting to use her invention for the greater good, or the threats delivered to her by the Decepticons, Sarah (usually) refused to divulged the secret of invisibility to either side. The Invisibility Factor