More from the article ...

... In a new class of attack on AI systems, troublemakers can carry out these environmental indirect prompt injection attacks to hijack decision-making processes.

Potential consequences include self-driving cars proceeding through crosswalks, even if a person was crossing, or tricking drones that are programmed to follow police cars into following a different vehicle entirely.

The researchers at the University of California, Santa Cruz, and Johns Hopkins showed that, in simulated trials, AI systems and the large vision language models (LVLMs) underpinning them would reliably follow instructions if displayed on signs held up in their camera's view. ...

... so, if I were to stand in a crosswalk holding a sign that says, "Go Left" the autonomous cars will obey that sign I made and am holding up?