1. PDA Biometric Integration
Daniel Dougherty
NSF REU at U.Va
Summer 2005

2. Program Goals Enable Privaris fingerprint scanner login for Web portal
Enable PDA login for Web portal using Biometric Interface

3. Problems faced: Privaris Scanner
How to interface with device
How to write programs for device
How to store information on device
How to access information once stored
How to interface with existing web portal

4. Interfacing with Device
Bluetooth adapter problems
Unable to successfully communicate with device

5. Results? How to write programs for device
How to store information on device
How to access information once stored
How to interface with existing web portal

6. Problems Faced: PDA Interface
How to write programs and web services in .NET
How to write and compile programs for PDA
How to use API for Biometric scanner
How to interface with existing web portal

7. Design Options Storage of template (local or database)
Local File: Faster processing of templates
(Better usability)
Database: Can’t send false acceptance
(Better security)

8. Design Options Web service or client-side application Service:
No implementation on local device
Server-side processing, less resource consumption
Client-Side:
No need to send new template across network

9. Design Problems Web Service: Client-side: BioAPI library failure
Bugs in Desktop portal interface
Client-side:
.NET libraries now limited
Can’t allocate memory for templates
Can’t launch external programs (Browser)
Attempted work-around with standard libraries

10. Results? Substantial progress
Partial completion of client-side application
Still work left to enable PDA Biometric login

11. Possible Future Work Access over wireless network
Ran across some issues with web services on the wireless network early on, but was unable to pursue these issues further due to time constraints
Encryption of information transferred over wireless network to/from PDA
Develop a PDA-specific version of web portal with smaller, mainly text based interface