A communication system has head wearable devices arranged for wireless communication in an operating environment. A first head wearable device (100) has a camera (120) for capturing an environment image and a first processor (110) arranged for detecting a further head wearable device (150) based on a viewing direction of a wearer of the first head wearable device. Then the further head wearable device is identified at an operational distance based on a remotely detectable visual property and a communication session is established between the first head wearable device and the further head wearable device. The further head wearable device has a further processor (160) for establishing the communication session. Effectively the communication session is initiated based on eye contact of the wearers of the head wearable devices. Gestures of the wearers may be detected to initiate or define the communication session.