Currently we are at the beginnings of widespread wireless connectivity and ubiquitous computing. The Web is merging with a variety of technologies: cell phones, laptop computers, hand held organisers, information appliances, and GPS and other sensors. The capability for access anytime and anywhere is here. The increasing frequency of cell phone calls at inappropriate times testifies that people no longer can easily control access. Devices can determine where they are located and can make a range of information available to users as well as make users available to others or their devices. We have proposed a general technique that promises to assist in mediating access. It capitalises on advantages afforded by computation(Hollan & Stometta, 1992). We first described the negotiation technique in the context of problems involved in scheduling meetings and then showed that similar issues, which at first may seem unrelated but in fact have much in common, arise in other contexts. One such activity, gaining immediate access, is currently of growing importance because of expanding connectivity via wireless technology. Cell phones and related technologies make it possible to be constantly available for synchronous interaction. At times, this can be advantageous but the associated costs and benefits result in a complex tradeoff space for designers as well as users.

InhaltsangabePreface: HCI 2000 -- Usability or Else!- Plenaries: Usability and Profits in the Digital Economy - Gerald (Jerry) L Lohse. Asynchronous Negotiated Access - James Hollan & Scott Stornetta.- The Context of Interaction: People, Places and Actions: Requirements are in the Eyes of the Beholders - Phil Turner. On Change and Tasks - Peter J Wild & Robert D Macredie. How Effective Are User Studies? - Sari Kujala & Martti Mäntylä. Function Allocation for Computer Aided Learning in a Complex Organisation - Chris Johnson & Bryan Mathers. Connections, Locations and Shared Workspaces: What Should the User Understand about Network Services for Online Collaboration? - Merja Ranta-aho, Maria Köykkä & Raila Ollikainen. Informing the Design of an Online Financial Advice System - Elizabeth Longmate, Paula Lynch & Chris Baber. Introducing Internet Terminals to the Home: Interaction Between Social, Physical, and Technological Spaces - Wai On Lee.- Process, Methodology and Design Methods: User Involvement in the Design of Human-Computer Interactions: Some Similarities and Differences between Design Approaches - Mathilde Bekker & John Long. Concurrent Usability Engineering - Pekka Ketola. Usability Capability Models - Review and Analysis - Timo Jokela. Hardening Soft Systems Conceptual Modelling - Dan Diaper. A Model for Extensible Web-based Information Intensive Task Oriented Systems - Cecilia Cunha, Clarisse de Souza, Violeta Quental & Daniel Schwabe. Analysis and Simulation of User Interfaces - Harold Thimbleby. Analysing Asynchronous Collaboration - Patrick G T Healey & Nick Bryan-Kinns.- Design Innovations: Caring, Sharing Widgets: A Toolkit of Sensitive Widgets - Murray Crease, Stephen Brewster & Philip Gray. Extending Eye Tracking to Analyse Interactions with Multimedia Information Presentations - N Hari Narayanan, Dan J Schrimpsher. QTVR Support for Teaching Operative Procedures in Dentistry - Simon A Clark, Betty P Ng &BL William Wong. Solutions for Elderly Visually Impaired People Using the Internet - Mary Zajicek & Sue Hall.- Usability and System Evaluation: Using Incident Reporting to Combat Human Error - Chris Johnson. Do Users Always Know What's Good For Them? Utilising Physiological Responses to Assess Media Quality - Gillian M Wilson & M Angela Sasse. Embodiment and Interface Metaphors: Comparing Computer Filing Systems - Mark Treglown. A Comprehension-based Model of Web Navigation and Its Application to Web Usability Analysis - Muneo Kitajima, Marilyn H Blackmon & Peter G Polson. Multimedia and Learning: Patterns of Interaction. Sandra Cairncross & Mike Mannion - Low Cost Remote Evaluation for Interface Prototyping - Lynne Dunckley, Dean Taylor, Malcolm Storey & Andy Smith. Are Passfaces More Usable Than Passwords? A Field Trial Investigation - Sacha Brostoff & M Angela Sasse. An Evaluation of Cone Trees - Andy Cockburn & Bruce McKenzie. The Evaluation of Desperado - A Computerised Tool to Aid Design Reuse - Nicola J Lambell, Linden J Ball & Thomas C Ormerod.- Author Index.- Keyword Index.