App: final version of one simple device to characterise street lamps spectra

StreetSpectra is an ACTION pilot citizen science project whose smartphone app is designed mainly for mapping the location and nature of street lights. This report describes the final solution implemented by the StreetSpectra pilot, based on mobile applications, data gathering platforms, classification platforms and OpenData platforms for publishing. It also describes the sister CS project named AZOTEA, born during the 2020 confinement period.