  Ad-hoc Social Networks have become popular to support novel applications
related to location-based mobile services that are of great importance to users
and businesses. Unlike traditional social services using a centralized server
to fetch location, ad-hoc social network services support infrastructure less
real-time social networking. It allows users to collaborate and share views
anytime anywhere. However, current ad-hoc social network applications are
either not available without rooting the mobile phones or don't filter the
nearby users based on common interests without a centralized server. This paper
presents an architecture and implementation of social networks on commercially
available mobile devices that allow broadcasting name and a limited number of
keywords representing users' interests without any connection in a nearby
region to facilitate matching of interests. The broadcasting region creates a
digital aura and is limited by WiFi region that is around 200 meters. The
application connects users to form a group based on their profile or interests
using peer-to-peer communication mode without using any centralized networking
or profile matching infrastructure. The peer-to-peer group can be used for
private communication when the network is not available.
