Contact Information

• Gates Hillman Center 7125
  Carnegie Mellon University
  5000 Forbes Avenue
  Pittsburgh, PA 15213
• jdt...@cs.cmu.edu

I am a third year PhD student in Computer Science at Carnegie Mellon University. I am advised by Luis von Ahn and Manuel Blum.

In the past I have worked on improving audio CAPTCHAs so that they are easier for humans and harder for computers to pass. The new audio CAPTCHAs have the added benefit that they transcribe difficult audio as users solve them, i.e. the audio reCAPTCHA. Check out my paper regarding my analysis of the security of three popular CAPTCHAs. You can read about the audio reCAPTCHA here!

Potential Future Projects

• Creating a game for GWAP.com
• Developing assistive technology for people who have Autism Spectrum Disorders