1. Mobile Location Based Assistant for Exhibition Visits: Thick Client
Group 3: David Bouckenhove
Wim De Smet
Sofian De Clercq
Jan Keymeulen
Christiaan Polet
Promotor: Prof. Dr. Ir. Frank Gielen
Assistent: David Matthys

2. Business Drivers More visitors for museums, exhibitions, …
Mobile Location Based Assistant for Exhibition Visits Thick Client
Business Drivers
More visitors for museums, exhibitions, …
A hip gadget , tool: The mobile location based assistant
Very high potential:
Nowadays, less young people visit exhibitions, museums
Plenty of exhibitions, museums, cities …

3. Business Drivers Approach RFID Artifact Device
Mobile Location Based Assistant for Exhibition Visits Thick Client
Business Drivers
Approach
RFID
Artifact
Device

4. Business Drivers Benefits: Competition: Uniqueness:
Mobile Location Based Assistant for Exhibition Visits Thick Client
Business Drivers
Benefits:
More (young) visitors for the exhibitions, museums, cities: more income
Competition:
Old fashion audio-guides
KPN-mobile system!
Uniqueness:
Fancy attractive gadget:must run on different platforms
Indoor, outdoor: various location techniques: RFID, IrDA, Bluetooth, GPS, GSM, …
Thick Client

5. Architecture – System context
Mobile Location Based Assistant for Exhibition Visits Thick Client
Architecture – System context
Flexible thick client
Offline operation
Online update
Tags (RFID, IrDA) provide object identification

6. Architecture – Subsystem
Mobile Location Based Assistant for Exhibition Visits Thick Client
Architecture – Subsystem
Requirements:
Flexible thick client
Easily modifiable User Interface
Automatic update, local storage
Debugging and testability support
Backend server architecture
Handles updates and processing of tag list
Scalable architecture

7. Architecture – Client Microkernel: easy to modify/port
Mobile Location Based Assistant for Exhibition Visits Thick Client
Architecture – Client
Microkernel: easy to modify/port

8. Architecture – Server Layered Scalable deployment for each layer
Mobile Location Based Assistant for Exhibition Visits Thick Client
Architecture – Server
Layered
Scalable deployment for each layer
Supports high availability (through redundancy) if necessary

9. Architecture – Deployment
Mobile Location Based Assistant for Exhibition Visits Thick Client
Architecture – Deployment

10. Scenario: Location Based Visit
Mobile Location Based Assistant for Exhibition Visits Thick Client
Scenario: Location Based Visit
A visitor requests location based information of an art object
The Visitor has a mobile device in his possession and is within the range of a functional tag
The information must be displayed within 1s

11. Scenario: Location Based Visit
Mobile Location Based Assistant for Exhibition Visits Thick Client
Scenario: Location Based Visit

12. Scenario: Location Based Visit
Mobile Location Based Assistant for Exhibition Visits Thick Client
Scenario: Location Based Visit
The ArtifactManager collects the visited tags
Graceful degradation:
Tag or LocationManager is not operational
Visitor can manually enter the tag and access the information

13. Testability: Location Based Visit
Mobile Location Based Assistant for Exhibition Visits Thick Client
Testability: Location Based Visit
Use a simulator to generate location coordinates
Log the output of the LocationManager and compare the tags with the coordinates
Architectural Impact: TestabilityManager
Can request info from the LocationManager
Can log the output of the LocationManager
Can simulate location coordinates

14. Quality Attribute Utility Tree
Mobile Location Based Assistant for Exhibition Visits Thick Client
Quality Attribute Utility Tree

15. Quality Attribute - Modifiability
Mobile Location Based Assistant for Exhibition Visits Thick Client
Quality Attribute - Modifiability
Modifiability as business driver
Biggest impact on architecture
Considered very important for client
Focus on modifiability will reduce
Time to market of patches.
(and hence) Costs of porting/extending

16. Quality Attribute - Modifiability
Mobile Location Based Assistant for Exhibition Visits Thick Client
Quality Attribute - Modifiability
Source of stimulus: developer
Stimulus: wishes use new platform
Artifact: code (platform)
Environment: offline
Response: a setup installing to the new platform
Response measure: 4 weeks

17. Impact on Architecture
Mobile Location Based Assistant for Exhibition Visits Thick Client
Impact on Architecture
Modifiability
Portability: Micro kernel approach
Extendability: modular architecture
Usability
Limited impact on architecture
Availability
Mostly hardware
Performance
Limited impact because of thick client approach

18. Conclusion After first feedback session, focus on modifiability
Mobile Location Based Assistant for Exhibition Visits Thick Client
Conclusion
After first feedback session, focus on modifiability
Benefits of thick client
availability
Performance
Disadvantages
modifiability: counter this with architecture
Developing architecture
iterations needed
management needed
Maintain broad focus, especially on business

19. Mobile Location Based Assistant for Exhibition Visits Thick Client
Questions?
Questions?