Published: Mar 08, 2011 12:12 AM EST
Updated: Mar 07, 2011 9:21 PM EST

NAPLES, Fla. - Crooks are getting creative to pass off bogus bucks to unsuspecting businesses. Even tricking the pens designed to detect counterfeit money.

A fake $50 bill popped up at Rita's Italian Ice in Naples. The man who passed it was caught on surveillance video.

The bill went undetected when tested with a counterfeit pen because the thieves are using the same paper real bills are made out of.

According to Naples Police, crooks wash and bleach $5 bills and then print the larger denomination on top of it. That way when the paper is tested for authenticity it seems legit.

The owner of Rita's Italian Ice tells WINK News it's best to check for watermarks, raised texture and thread through the bill that will match the actual denomination.

The man who passed the bill is described as stocky, in his 30s, with a buzz cut and scruffy facial hair.