Eavesdropping

Like pickpocketing, interrogation and informers, eavesdropping is another form of gaining information throughout the game and is most probably the easiest method of information gaining.

Method
To start eavesdropping go to one of the eavesdropping objectives. Once at the objective look for the person you will be eavesdropping once found find a close bench and sit down. Once sat down target the person you will be eavesdropping and activate the eavesdropping, the screen will zoom in on the target and you will hear a short conversation between the target and someone else, you have now completed you eavesdropping.