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

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

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

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

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

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

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

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

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

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

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