Facebook post by University of Helsinki Julkaistu 19.10.2018 klo 08:56 University of Helsinki kirjoitti Facebookissa Handy couriers, an all-seeing surveillance system, or something in between? Researchers share their views on using drones. What to prepare for when city skies become populated by drones? helsinki.fi Navigation assistance, air quality measurements and security risks – what to prepare for when city skies become populated by drones?