I smiled. The way Raven explained it to me. ail that happens when you die is that your SIN gets a D added on to it. Most folks assume that stands for deceased, but Raven said the "D" stands for Deactivated. The SIN is still used for tracking statistics and inheritance taxes and determining pensions for widows, and so on. Because the numbers must remain within the Matrix, the Graverobbers can use them to crack into other systems. Even if the Graverobbers are detected and traced, the Cops are left looking for a suspect who has been potted and shelved in a mausoleum.