[Red Badger]

Paper money should have a barcode of the serial number in place so it can be scanned just like lottery tickets. The computer could verify that S/N and whether it has been used outside a certain radius within a too short period of time. Also it could tell if the note has been used more than what would be expected in a normal day...........

[Yo-Yo]

It also could be used to track who spent the money. The #1 reason to use cash instead of check or credit card is for anonymity. Tracking bills as you describe would effectively kill the need for any paper money at all.

There's your cheaper solution. Make the highest denomination bill the Twenty.

[Jack Black]

Great! Then the government can keep track of every dollar we spend, along with our web surfing, driving, telelphone calls, email and medical records.

I feel so much safer already!

[MaDeuce]

"Paper money should have a barcode of the serial number in place so it can be scanned just like lottery tickets."

Bite your tongue! You want the Gov't to track every little purchase you make with cash?!?!?!

Just use your credit card if your that worried. I like using cash whenever possible and don't need some Gov't thug storing that data for some future confiscation or persecution.