Generation stamping is a technique used in card making where multiple layers of ink are stamped onto a card or paper to create a multi-colored and multi-layered effect. This technique involves using the same stamp multiple times without re-inking it to create a gradient effect. The resulting design can be used as a background for other stamped images or as a standalone design element. Generation stamping is a popular technique among card makers and can be used to create a variety of designs and styles.