Dear GIS-IDEAS 2021 Participants, Less that 2 days left for the inauguration of the GIS-IDEAS 2021 International conference. Your support and contributions had enabled us to offer an exciting program with 40 Oral presentations, 22 poster presentations and 8 Training Workshops. The updated conference program is available on the conference website and can also be directly accessed from the link below; https://gisws.media.osaka-cu.ac.jp/gisideas20/schedule.pdf The schedule sheets contains links to the online conference rooms, camera-ready papers and poster presentations. We look forward to your active participation and the deliberations with bring out new ideas and usher productive collaborations in Geoinformatics. See you at GIS-IDEAS 2021! Best wishes, GIS-IDEAS 2021 Team -- Sincerely, Conference Secretariat Attn: Secretary GIS-IDEAS 2021 Email: gidea-office@gisws.media.osaka-cu.ac.jp