Hello @justyy thank you for your observation :). The app is not used for "directly using the blood" hence it's a tool for connecting blood requestors to possible donors, the process is, the donor and the requestor must go to a certain hospital so that the possible donor will be checked if he is healthy or not. That's why the app has a built in messaging system in order for the requestor and the donor to communicate to each other, also, the content that is posted by the user includes the hospital name and address where the patient is confined. In that matter, the possible donor will just go to the hospital and schedule a time for his health examination.