In the United State we have a opt in organ donor system. If you wish to give the gift of life, you have to register, fill out the paper, alert your family , tag your driver license.
This should be a Opt out system, where everyone is considered a donor, and those that wish to exercise their right not to be, should have to register, fill out the paper, alert their family , tag their driver license.
Changing this system would only speed up the time for organ donors, shorten the waiting list. and save lives. About 18 people die each day waiting for transplants... a Day!