Recently, proximity services (ProSe) have become a promising mobile industry that enables to create numerous interesting mobile services. Basically, ProSe can be composed of two main groups of use cases: public safety communications and discovery mode (commercial applications) [1]. Proximity applications allow users in local area to share experiences about specific places in real time, which can give them more fun and can increase users’ engagement. It is estimated that this emerging ProSe market has grown to $1.9 billion in revenues by 2016 [2].