Licensed payday advance businesses, which lend money at high rates of interest on the security of a postdated check, are often described as loan sharks by their critics due to high interest rates that trap debtors, stopping short of illegal lending and violent collection practices. Today's payday loan is a close cousin of the early 20th century salary loan, the product to which the "shark" epithet was originally applied, but they are now legalised in some states.