That's why we decided to create a stronger reason to make people come back for more donations: we showed some real gratitude from people who would receive the blood. We printed QR Codes on every adhesive plaster used to cover the donors wounds. And we asked them to take a picture of the QR Code. When read with a smartphone, the code led to a video with thanks from the people that would receive the blood that had just been donated.

At the end of the video, it was possible to share the experience with friends on Facebook, encouraging them to become donors as well.

With very little resources, we reached more than 800 donors in 1 week, and more than 218,000 people by shared videos on Facebook.After 3 months, the number of donations increased 23% - 3 months being the minimum period allowed before a second donation.