Digital Dog, an arm of the Australian NGO, Black Dog Institute, aims to research how technology can be used to solve mental health problems. Its projects use social media data (primarily shared by Twitter) for research. "Mobile Phones as Pervasive Devices" uses mobile sensing technology such as Bluetooth to track social interactions in order to identify suicidal or other at-risk behavior. Data sharing methods depend on the particular project. The mobile sensing tracker used an app during the clinical trial to support this research. The data sharing methods used to collect social media data are explained in more detail in the "We Feel" case found in the Data Collaboratives Explorer.