1. ChatArt Windows Phone App
Windows 7 | Presenter Mode
Friday, June 08, 2018
ChatArt Windows Phone App
Tara Balakrishnan
Microsoft Research Connections
High School Intern
Microsoft Confidential

2. About Me
This summer I developed an app for WP7 that leverages the Project Hawaii Services
Rising Senior at Redmond High School
High School Intern at MSR Connections

3. Windows® 7 | Presenter Mode
Friday, June 08, 2018
Goal:
ChatArt: Users can interact through a pictographic messaging system.
Capabilities:
Manage groups
Send pictures and text messages to a single friend or groups of friends
RELAY SERVICE
Connect users over the cloud
WP7
WP7
Microsoft Confidential

4. Project Hawaii background information
PURPOSE:
Client+Cloud =
MORE POWER
Utilize the cloud’s computing power for the client device
SERVICES:
SPEECH TO TEXT OCR
RELAY
RENDEZVOUS
RELAY:
Send messages across the cloud
RENDEZVOUS:
Associate a device with a friendly name

5. Hawaii Relay & Rendezvous Services
Each endpoint receives a unique identifier, which can be used to transmit and receive messages
Provides a FIFO storage queue for each ID so that messages can be saved and retrieved at a later point in time.
Allows a user to associate and look up a “friendly name” to the IDs used by the Relay service
Register a friendly name, de- register, associate ID with a friendly name, disassociate, look up ID associated with a friendly name

6. ChatArt Features Communicate across multiple devices
Send/Receive pictures and text messages
Touch-based drawing capability
Design an interactive user-interface
Employ native storage for chat history

7. Communication

8. Drawing Interface

9. Application Architecture

10. Client-specific Architecture

11. User Interface Design Studies
COMMENTS
GUI is extremely intuitive
Palette is effectively structured
Application Bar allows appropriate user-control
SUGGESTIONS
Include detailed instructions for joining and creating new user groups:
Improve the group page UI

12. Demo
ChatArt:
Windows Phone Application
pictographic messaging system

13. Challenges WRITEABLEBITMAP Creating one from a UI Element THREADING
Produce a smooth drawing experience
TOMBSTONING
Still needs to be implemented
Convert the canvas into an Image
Save the image as a WriteableBitmap
Serialize the bitmap into a byte array
Send across the Relay Service
Create an image from the byte array
Read a smooth motion from touch inputs
Limit the number of asynchronous calls to prevent lagging
Data is stored across several instances of the application
Relay service queue isn’t cleared once the image is read

14. Future Investment Increase Usability ImproveUI
Enhance the ‘Join Group’ page
Improve the user-experience
Fully Employ the Hawaii Rendezvous Service
Better group management
Add a ‘Help Guide’ for new users
Group
Control
Windows Phone Microsoft confidential.

15. Potential Applications
Communication in Emerging Markets
Help people, who are unable to read and write, communicate
Memorable Communication
HAVE FUN!!
Sending and Creating pictures, and playing fun games
Teaching Tool
Communicate despite language barriers
Learn the basics of an unfamiliar language

16. Questions?
Thank You!