Minnesota's underage teens will have a harder time purchasing cigarettes and alcohol with the state's new driver's license design. In December 2004, Gov. Tim Pawlenty introduced new cards that feature a state seal visible only under ultra-violet light and a digital watermark that can be authenticated only by law enforcement agencies. Other elements include fine lines printed over the cardholder's picture and “rainbow” printing designed to blend background colors. A red “Under 21” border and an 18th birthday indicator help identify minors. Designed by St. Paul, Minn.-based 3M, the cards are printed with proprietary paper and laminate, and include a loon image that appears to rise or fall beneath the card's surface. New cards are issued to every first-time applicant and to anyone renewing or replacing a driver's license or ID card.