Title slide here WAP Application Usability In GSM

Title slide here WAP Application Usability In GSM Markets October 2000 Paul Smethers Director of Usability Phone. com

Problem Statement n “Usability” defined as intuitive user interface for average consumers n WAP doesn’t define interaction model n European WAP developers mostly use Nokia’s SDK and interaction model n All WAP browsers have different interaction models n Wireless interaction models are different from PC interaction models Phone. com 2

Solution Constraints n The issue is “Interaction” not “Presentation” n Solution must allow for a standard to develop a single application for all wireless devices n Most wireless devices cannot be upgraded by consumers n Consumers will buy whatever device is popular n Consumers will reject wireless Internet if it is not easy to use on their device n It will take 1 year before a new standard can be deployed Phone. com 3

Candidate Solutions n Developers g build multiple applications Only solution that works today n Semantically enriched markup language g New tags to allow developers to specify interaction desired n Allow developers to explicitly define interaction model Phone. com 4

Browser Differences Example Phone. com style “<select>” WML Element Nokia style “<select>” WML Element Phone. com 5

Another Example Yes Phone. com style “<do>” WML Elements No Nokia style “<do>” WML Element Phone. com 6