The paper presents a set of mobile applications aiding the visually impaired in using the public transport. A user equipped with a modern smartphone with mobile data transmission and positioning capabilities can access location related context information. Keeping up the connection with dedicated system servers gives the user access to additional services,… (More)
The paper describes architecture of a prototype networked student information delivery system. Main system functionalities include interactive access to lecture room timetables and group messaging. The system exploits modern mobile technologies to allow flexible usage scenarios. The use of open APIs of telecommunications service delivery platforms in… (More)
The aim of this paper is to present a prototype LocNet API programming interface for indoor positioning systems and a prototype LocFusion API interface enabling joint use of terminal positioning data from mobile operator's GMLC and the LocNet API. The use of data from complementary information sources can improve the accuracy of user terminal positioning in… (More)
The paper presents a prototype mixed-mode wireless indoor positioning and navigation system. The main goal of the system is to provide accurate and reliable location information for visually impaired users. The system also enables access to location related context information. The radio nodes of the network can operate in two power modes providing basis… (More)
intelligence services every year becomes more dangerous threat to our privacy. Recently, number of security enrichment was developed that allows to increase privacy protection during pervasive network use. In this article we present a novel approach that uses telecommunications OpenMiddleware APIs to provide reliable public key exchange protocol.
The paper presents a prototype radio network aiding the visually impaired to navigate in indoor areas. The main purpose of the system is to provide accurate and reliable location information as well as to enable access to location related context information. The nodes of the network operate in two modes providing basis for both rough and precise user… (More)
The paper presents POI Explorer mobile application aiding the visually impaired in spatial orientation and in urban navigation. A user equipped with a smartphone with accelerometer, electronic compass, mobile data transmission and positioning capabilities can access information on nearby points of interest. Maintaining data connection with dedicated system… (More)
Using a novel strategy, tertiary phosphines based on single atom peri-bridged acenaphthenes were prepared and characterized by multinuclear NMR and by X-ray diffraction.