black communication computer computing control shift digital enter game gaming internet keyboard line magenta network pink purple querty red tech technology text violet asbestos attention beware building yard construction area danger directions do not enter finger gesture glove hand icon illustration industrial logo pictogram sign signs stay away stay out thumb warning aged ancient antique architecture brick building dirty door entrance exit exterior front gate grunge house middle mystery old old-fashioned vintage wall announcement aware awareness communicating direction entry information informative informing observant observe regulations rules rust rusty security visitors white wood wooden barred bars caution communicate control do not forbidden impede locked notice pipes posted prevent prevented Restrict restricted restriction alphabet black-and-white delete device grey input laptop metal notebook numeric parallel pattern rectangle shift type typing auto car cutout drive driver engine grill isolated lamp lamps machine modern move open opened roof speed suv transport transportation travel vehicle wheels decor doors doorway entering handle historical iron key lock obsolete ornament