Blending

A popular technique used to sneak past enemies is called Blending. To Blend when playing Assassin's Creed just press the A button for the Xbox 360 version. There are many points in the game where you come upon guards who are 'Informed', Blending is the easiest way to get by without causing trouble. However, Blending doesn't always work in every situation so being cautious at all times is recommended.