Mobility, context-awareness and payment combined provide a customer with a completely new setting of consuming services at any time and any place. We introduce SmartRestaurant ser...
This paper presents results from a field study on voluntary contributions for an information public good provided via the Internet (an electronic newsletter for authors). Whereas ...
Customers are usually passive in an electronic commerce transaction. Based on a new two times concurrent signature, this article presents a fair electronic payment (E-payment) pro...
One important requirement of electronic cash systems is the anonymity of customers. Unconditional anonymity is also very well suited to support criminals in blackmailing. Maitland ...
Beginning with the adoption of the de-facto standard for wireless LAN communications IEEE 802.11 in 1999 we can observe a continuous growth of public wireless LAN hotspots that pro...