Technologies are generally described for systems, devices and methods effective to implement a line of sight initiated handshake. In some examples, a processor in a first communication device may detect a line of sight directed from the first communication device to a second communication device. The first communication device may send a handshake request to the second communication device. The first communication device may receive a handshake acknowledgement from the second communication device. The handshake request and handshake acknowledgement may be effective to create the handshake. The first and second communication devices can thereafter share data.