Though many have doubts that biometric technology will become the prevailing ID technology of the future, replacing passwords and PIN numbers… it’s already being rolled out. In some places, it’s been active for a decade.
Palm vein ID technology, a system most Americans are not yet familiar with, has been gaining in usage and popularity abroad, and now beginning to reach domestic shores. Palm vein technology uses an infrared scanner to identify the veins inside one’s hand, compare it to a complex algorithm of data points, and okay (or decline) the user. The system has been tested extensively, demonstrating a .0001% error rate in over 75,000 user tests. (More info here and here.)