Software developer the presenter demos the first full-length interactive book for the iPad – with clever, swipeable video and graphics and some very cool data visualizations to play with. The book is “Our Choice,” Al Gore’s sequel to “An Inconvenient Truth.”
The halls of CES are filled with plenty of new gadgets and tools for small business owners. Here are five of the best that one may want to check out.
A healthcare monitoring system is presented in this paper. This system is based on ultra-low power sensor nodes and a personal server, which is based on hardware and software extensions to a Personal Digital Assistant (PDA)/Smartphone. The sensor node collects data from the body of a patient and sends it to the personal server where the data is processed, displayed and made ready to be sent to a healthcare network, if necessary. The personal server consists of a compact low power receiver module and equipped with a Smartphone software. The receiver module takes less than 30 × 30 mm board size and consumes approximately 25 mA in active mode.
Textual passwords are the most common method used for authentication. But textual passwords are vulnerable to eves dropping, dictionary attacks, social engineering and shoulder surfing. Graphical passwords are introduced as alternative techniques to textual passwords. Most of the graphical schemes are vulnerable to shoulder surfing. To address this problem, text can be combined with images or colors to generate session passwords for authentication. Session passwords can be used only once and every time a new password is generated. In this paper, two techniques are proposed to generate session passwords using text and colors which are resistant to shoulder surfing. These methods are suitable for Personal Digital Assistants.
Due to the advancement of technology, smart sensors and smart objects are becoming popular now-a-days. These smart sensors and objects have some computation power so that depending on the change of the environment they can take actions accordingly. Since the use of portable devices like PDA, cellular phone is increasing; users also would like to interact with the environment through these. Moreover, for performing complex operations, the authors need to have context middleware that can analyze the contexts and provide necessary services to users. Therefore, it is obvious that for all of these cases, a repository of contexts is badly needed to store the generated contexts as well as to retrieve those contexts whenever necessary.