Univers: an attribute-based name server
Software—Practice & Experience
The active badge location system
ACM Transactions on Information Systems (TOIS)
Disconnected operation in the Coda File System
ACM Transactions on Computer Systems (TOCS)
Some computer science issues in ubiquitous computing
Communications of the ACM - Special issue on computer augmented environments: back to the real world
Mobile wireless computing: challenges in data management
Communications of the ACM
A Framework for Environment Aware Mobile Applications
ICDCS '97 Proceedings of the 17th International Conference on Distributed Computing Systems (ICDCS '97)
Mobisaic: An Information System for a Mobile Wireless Computing Environment
WMCSA '94 Proceedings of the 1994 First Workshop on Mobile Computing Systems and Applications
An Energy Efficient Middleware Architecture for Processing Spatial Alarms on Mobile Clients
Mobile Networks and Applications
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Mobile computers often benefit from software which adapts to their location. For example, a computer might be backed up when at the office, or the default printer might always be a nearby one. In many existing systems, location-triggered actions are only possible for specific applications or with special infrastructure. This paper describes lcron, a system which supports user-configurable actions triggered on change in location or other events common to mobile computers. Key features of lcron are its use of existing clues for location information and mapping low-level location information into user-sensible terms. Lcron uses a number of existing sources of location such as network connection and base station ID, allowing it to work without special hardware or GPS receivers. We map sources of low-level information such as IP address and latitude/longitude into user-meaningful logical locations. We describe the design, implementation and our experiences with this system.