No Thumbs-Up Sign - Prohibition Symbol for Disapproval or Restriction #3063648 (License: Personal Use)

The image displays a standard prohibition symbol: a bold red circle with a diagonal slash overlaid on a black silhouette of a raised thumb and fist (thumbs-up gesture). The sign is mounted on a light background with two visible fasteners at top and bottom, suggesting it’s affixed to a wall or post. Its design follows ISO 7010 conventions for mandatory and prohibitory signage, emphasizing visual clarity and cross-cultural recognition.

Commonly used in formal settings like courtrooms, diplomatic zones, security checkpoints, or digital interfaces where gestures of approval could be misinterpreted or violate protocol. Matches user intent seeking symbols for behavioral restrictions, signage design references, or accessibility/UX guidance on non-verbal communication limits.