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Location Based Services (LBS) are services offered by smart phone applications which use device location data to offer the location-related services. Privacy of location information is a major concern in LBS applications. This paper compares the location APIs of iOS with the IETF Geopriv architecture to determine what mechanisms are in place to protect location privacy of an iOS user. The focus of...
This paper investigates the quality of geographical information provided by Geo-media, such as Foursquare, and its geographical distribution. According to the result, geographical information described by autonomous individuals contains numerous errors and lacks data, even though it tends to have detailed street addresses. In addition, the information is heavily clustered in metropolitan areas. In...
VANET (Vehicular Ad-hoc Network) that is used for vehicular-to-vehicular and vehicular-to-roadside communication is well known as one of the representative application of ad hoc networks. One of the representative mechanisms is Epidemic Routing that adopts the concept of Store-Carry-Forward. However, in Store-Carry-Forward mechanism, each node stores data packets in the buffer, and whenever the node...
With the popularity of smart phones, GPS is used more and more in the cell phone. The location information in the GPS is very significant for evidence-gaining. This paper researched and realized the operations under Symbian OS such as GPS-related applications. Firstly I introduced the concept of GPS and GPS-related knowledge in the mobile phone. Secondly I programmed cell phone GPS detection and extracted...
Aiding the efficient collaboration and coordination of rescue teams is a difficult task especially in a mountainous region. Challenges emerge from quickly alerting and debriefing rescuers, to deploying them effectively, and also coordinating and monitoring them in the rural search domain. Knowing the exact location of the rescuers and vehicles involved in a mountain search and rescue mission is a...
Ad hoc networking is considered as an inexpensive solution for easy and fast wireless network coverage. However, for real service deployment, security and availability in such networks are still under research even though some experimentation has shown its viability. Additionally, peer-to-peer (P2P) networking has emerged as a key technology to enable resource sharing among users. As a result, the...
As integration of heterogeneous networks has become one of the most important characters for next-generation networks, it becomes a very challenging issue to ensure effective handoff when mobile node moves between different heterogeneous networks. In this paper we propose an effective handoff mechanism based on location information. By processing geographical data (consisting of information about...
Geotagging, in which digital photos are labelled with the location where they were taken, becomes more popular today. Users can browse the photos on digital map and make the Web photo sharing and management even more conveniently. However, lacking the function of authentication and the way to deal with the situation that information within the EXIF area being falsified, the content of the photo might...
This paper describes a model for applying presence for situation awareness by combining presence publications from various sources with other data, retrieved from for example sensors. Using new technology in conjunction with presence and location information, situational awareness can be considerably improved. Furthermore, it is studied how these concepts can be applied in urban operations. Location...
A location and tracking system becomes very important to our future world of pervasive computing, where information is all around us. Location is one of the most needed information for emerging and future applications. Since the public use of GPS satellite is allowed, several state-of-the-art devices become part of our life, e.g. a car navigator and a mobile phone with a built-in GPS receiver. However,...
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