Humans have used bartering systems since they learned how to create societies. If you remove one form of 'money' another will take its place.
Perhaps berries and beef jerky will be used to 'purchase' what you need?
The problems with the bartering system is that the bartering agent can be accumulated. If it can be accumulated, it can be lost or stolen. Value is placed on objects of interest and greed then determines how many of the bartering agents it requires for you to gain ownership of that object.
RF-ID chips permanently identify you and your wealth to anyone with a reader. Not all people have readers. Those with readers will have all your information available to them. What would they do with that information. It was proposed that wealth-by-chip would reduce crime. That is not true. Even in today's world of the dollar, your wealth can be stolen by anyone that has access to your personal information. RF-ID will not replace the dollar.
The dollar will be superseded eventually by some other bartering agent. It will be an object that can be carried around that anyone can see as a presentation of ability to meet the value of whatever is being bartered. It will have a value placed upon it that represents its worth. The dollar is not the value of our money. The dollar represents a portion of gold. Right now, when you buy something with a dollar you are agreeing that the object is as valuable as the gold the dollar represents.
Gold is $
http://goldprice.org/ per ounce. That means that an ounce of gold represents 1,236 and 64/100ths one dollar bills. Not the other way around. How much gold do you get for a dollar? If you pay a dollar for something it means it has the value of that much gold. If you pay $1236.64 for a gallon of milk, that gallon of milk has the same value as an oz of gold.
The bartering agents are not going to go away. No matter what replaces gold as the value the value will remain intact. The systems in place that depend upon those values will still be effective. Bartering agents will change but bartering will remain. Value will remain. Commerce will remain. Crime will remain and so will greed.