It is damned near impossible to counterfeit Canadian bills effectively.......except that nobody really looks.
take out a bill.
Down the right side is a reflective strip that shows maple leafs wheb turned in the light.
On the left side, beside the large denomination numbers, there is a small set of numbers (the denomination) you can only completely see when the bill is held up against a light.
Also, just to the left of centre of the bill, the face of the person appearing on the bill also appears in miniature when the bill is held up against a light.
The stores would not have a problem with counterfeits if they gave their clerks a 10 minute instruction on detecting them......and hired enough so they have time to actually LOOK at the money.
There are other ways visible to the bare eye and hand. For one thing, true bills have little dots on them that can be scratched off. If they don't scratch off - you have a conterfeit bill. True money has raised serial numbers and counterfeit does not. If you hold a bill up to the light, you will see a head in the mid bottome area - this is also real. Take a brand spanking new $100.00 bill and rub it on a piece of white paper. If it's fake - your paper will stay white. If the colour rubs off - your bill is real.
Our store has just installed 6 self serve check-outs. It instantly recognizes phoney money and spits it out. While I did not try to explain it to an old fellow I had yesterday - his money would not go through. It was an older $20.00. We tried 3 - 4 times. I knew beyond a doubt that this man was not making any attempt at giving me a phoney bill but I also knew that he had a phoney bill. He asked me if maybe we should try another bill to which I agreed and it worked instantly. I hope he's able to pass it off somewhere without it costing him. At a regular till though, chances are, that money would have gone through the store.
I have 2 fifty dollar bills that are old. They are of the RCMP musical ride. Someone brought them into the store and I am not allowed to exchange any money in my till with another cashier. However, I wanted the bills. I was going on a break soon, so, I picked up a chocolate bar, went through the same till with it being "manned" by another cashier who had taken over from me. I told her I would like to have $100.00 cash back and I would like the two $50.00 bills I knew were in the drawer. Now I am wondering if I could have phoney bills. Only days after I did that, there was a local announcement stating that people were passing phoney old looking bills. Bills with the Ride on them are of value. The ones I have would not be high value even if (I hope and pray) they are real because they are old. It's easy to see how you can be taken in.