**Tool/technique** * What problems or use cases is this project related to? * Current tier of use? * Intended tier of use? * How easy it it to make? * How easy is it to use / is there a ladder of Hello World activities / are how-to guides available, and in what languages? * What type of data does it collect, and how understandable is that data? * What software is available for analyzing data, and how easy to use is it? * What are similar commercially available tools?