Int. J. Environ. Res. Public Health 2009, 6 511 Figure 13. Quantified self-tracking tools: FitBit, GoWearFit and Tweet what you eat! There are many other self-measurement devices such as home kits for blood pressure monitoring but data collection is manual. A future can be imagined where it would be standard for all self- measurement devices, for example heart rate monitors, to have an option for wireless network connectivity to automatically download data to a consolidated format for storage, display and analysis. Figure 13 presents visual examples of some of the self-tracking tools discussed above. 2.3.4. Categories and types of environmental tracking tools In addition to tracking biomarkers and behavior, one’s environment is the next logical area to monitor for personal health, resource utilization and other reasons. A side benefit of environmental tracking may be that individuals are encouraged to take responsibility on a larger scale. As with behavioral tracking, there is an interesting array of vendor-provided and consumer-invented tools to facilitate the monitoring process. The first application, environmental monitoring for personal health reasons, takes advantage of consumer mobile phones and sensors connected wirelessly to the Internet. Two key efforts are the UCLA Center for Embedded Networked Sensing’s participatory urban sensing project (http://urban.cens.ucla.edu) which uploads location data from GPS-enabled mobile phones to a central repository and generates Personal Environmental Impact Reports (PEIR) as depicted in Figure 14 with an example of social network members discussing the report. A second effort is OpenSpime’s Internet-connected geosensors, being developed to capture ongoing real-time readings of pollution and other air quality indicators and automatically log the information to a collective display built on Google Maps (http://www.openspime.com). The second application area, resource utilization, focuses primarily on home automation and utility consumption and management, with projects including electricity, water and solar panel monitoring. Several projects were demonstrated at the November 2008 inaugural HomeCamp (http://homecamp.org.uk), for example the Current Cost in-home electricity monitor (http://www.currentcost.com) pictured in Figure 14, and IBM distinguished engineer Andy Stanford- Clark’s sophisticated home automation system ranging from measuring the electricity consumption to the resistance of cheese in mousetraps, all supported by an extensive messaging and database-driven backend (http://andypiper.wordpress.com/2008/12/01/the-inaugural-homecamp).