As a helpful feature on the 1976 classic , The World of 2274
: Every citizen has a crystal implanted in their palm at birth that changes color as they age. When it begins blinking red, their "Lastday" has arrived. Logan's Run
However, this luxury comes with a terminal cost: to maintain population balance and resource equilibrium, no one is allowed to live past the age of 30. As a helpful feature on the 1976 classic