A donor card is a document that indicates a person's wish to donate their organs and tissues after death. It serves as a legal expression of consent, helping medical professionals and family members understand the individual's intentions regarding organ donation. These cards can be obtained from various sources, including hospitals, organ donation organizations, and government health departments. Carrying a donor card can facilitate the donation process and ensure that a person's wishes are honored, contributing to the lives of those in need of transplants, such as patients on waiting lists for organs like hearts or kidneys.