It's been ten years since the U.S. introduced the "new" color $20 bill. According to the Bureau of Engraving and Printing, the average life of the 20 is just two years before it wears out. But the reason for the color 20 was introduced wasn't just about wear and tear, it was about anti-counterfeiting technology. And, does your family have etiquette for using tech at the dinner table? Marketplace Tech speaks with a Cape Cod mother of five who is making rules to help her family navigate how to behave as a family in a high tech, interconnected world.