Do any of you have experiance using counterfit barcodes and recipts ??

I am starting a new type of double buy with counterfeit bar codes and receipts that i am printing with a thermal printer. I was curious if any one on had any experience with counterfeit receipts and counterfeit bar codes? and if so how did it go? also if so is there any higher end items you would recommend and maybe any bar-code or receipt templates kicking around? regardless ill let you guys know how it all goes. :sneakiness: