EEG sensors have been used in a wide variety of applications. For
example, Ashkan et al. [1] have developed an EEG-based brain-
computer interface system for implicit emotional tagging of
multimedia content. Also, Mostow et al. [12] have used EEG
sensors on students to monitor cognitive processing and their
mind state during learning. However, these EEG applications
were based on indoor use scenarios, and hence EEG sensors used
in non-mobile settings. SmartCap [19] have used a mobile EEG
and developed a monitoring system that fits on the head to
measure and monitor the car driver fatigue, which can help in
reducing the occurrences of incidents. Outdoor environments
require mobile technologies in order to facilitate data collection
such as mobile phones.