ABSTRACT
In Chapter 2, we have discussed two types of sensing: personal sensing and public sensing. Personal mobile sensing is favored mostly to monitor a single individual to provide customized alerts or assistance. Public mobile sensing, which is commonly termed as mobile crowdsourcing, requires the active participation of smartphone users to contribute sensor data, mostly by reporting data manually from their smartphones. The reports could be road accidents or new traffic patterns, taking photos for citizen journalism, etc. The aggregated useful public information can be shared back with the users on a grand scale.
