[Brown Deer]

“The pen is used to detect iodine or starch,” says Todd Madison of the US Secret Service. So it won’t help with “bleached notes,” an insidious and little-known counterfeit scam being played all over the city. ~~ December 5, 2010

[Carthego delenda est]

The pens used in the article you posted a link to are normal sized pens. Nothing close to the size of the item in question in the doctor or agent’s hand.

http://www.officedepot.com/a/browse/check-fraud-prevention-and-counterfeit-detector/N=5+573547/