Keith R Bujak has researched how mobile phones and text messaging can be used to support learning in areas where Internet connections are limited. Results of a pilot study conducted at Georgia Tech's Problem Solving and Educational Technology Lab showed that complex interactions are possible. Participants found the system easy to understand and a useful learning tool. What concepts would be best-suited to this type of delivery is a suggested future research topic. Bujak is an engineering psychology doctoral candidate at the university and his current interests include active, constructive and interactive learning, mobile learning and cognitive science-based physics education.