Data collection tools included:
- Netradar (https://www.netradar.org) - data stored on Netradar site
- Mobilog2 (http://www.valerio.im/others.html#mobilog)
- Network Monitor (https://f-droid.org/repository/browse/?fdfilter=monitor&fdid=ca.rmen.android.networkmonitor)
- Mozilla Stumbler (https://location.services.mozilla.com/)