One gets to know the usage of physical posters as gateways to mobile services that are related to advertisements and information presented on these posters. The aim is to create a system that allows seamless and natural interaction of users with posters. The work is based on a requirements analysis. The placement and physical accessibility of posters and the behavior of people waiting in public places were investigated.
Recently, a lot of new service discovery mechanisms have been elaborated to cope with the special constraints of mobile ad-hoc environments: memory is scarce, connections are often very unreliable and networks do not offer any specified infrastructure. Service discovery in mobile ad-hoc environments is not efficient with static directory services. This research paper from University of Munich shows that under certain conditions, by exploiting static properties of services found in a MANET, service discovery can be fairly optimized. Examples for such static properties can be the IP-address or the location coordinates of a device.