Player's Handbook[]
The character can understand the speech of those he can see but not hear. When this proficiency is chosen, the player must specify what language the character can lip read (it must be a language the character can already speak). To use the proficiency, the character must be within 30 feet of the speaker and be able to see him speak. A proficiency check is made. If the check fails, nothing is learned. If the check is successful, 70% of the conversation is understood. Since certain sounds are impossible to differentiate, the understanding of a lip-read conversation is never better than this.
Player's Option: Skills & Powers[]
Reading Lips: Characters possessing this proficiency have a chance to understand the speech of those they can see but not hear. The speaker must be clearly visible, less than 30 feet away, and well-illuminated—characters cannot lip-read with infravision. If the speaker is addressing the lip reader and intends to be understood, no proficiency check is necessary. If lip readers attempt to “overhear” speech not directed to them, proficiency checks are required. Success means the gist of the words come through. The trait of empathy adds +2 to checks using this skill.