In an effort to thwart counterfeit currency being passed to hotel cashiers, many properties require larger bills (say $50's or $100's) be tested with a dry mark counterfeit detection pen.

Question

Quizplus · Accepted Answer

Many hotels and other businesses use counterfeit detection pens on larger bills to ensure they are not accepting fake currency. These pens contain a solution that reacts with the starch in most paper currencies, leaving a mark that indicates whether the bill is genuine or counterfeit.

In an Effort to Thwart Counterfeit Currency Being Passed to Hotel