“…It is carried out in order to evaluate the proposed system and to support the argument that the integration of discovery mechanism and several proof-of-proximity protocols into a single device pairing system is an effective approach for ordinary users from both security and usability points of view. The remaining part of this paper is organised as follows: section 2 presents brief summary of the proposed system [1], section 3 discusses the implementation, section 4 presents the details of usability study, section 5 describes the results and presents the evaluation of the proposed system, and finally section 6 concludes the paper.…”