Adhesive Sign/Notice Sign, Mobile Phone Prohibition 10 cm. Good signage is important for displaying and enforcing the rules and prohibitions in your establishment. For example, it can help manage access by prohibiting unauthorized personnel from entering certain areas. Internal regulations, such as the smoking ban in the premises, can also be indicated with this sign. Our signs are durable due to their strength and can be easily attached to walls, doors, or other surfaces thanks to the adhesive backing. They are slip-resistant, making them suitable for application on the floor as well.