LOT TICKET AND PRINTING METHOD THEREOF

摘要

A method for enhancing the security of instant lottery tickets. A book number (22) indicating from which packet a particular lottery ticket originated is printed on the back of the ticket and an integrity (26) number is printed on the front of the ticket. The integrity number (26) is related to the book number (22) by an algorithm known only to the ticket manufacturer and the lottery administration. To further enhance the security of the ticket, the book number (22) and integrity number (26) are simultaneously printed onto the ticket.