The end of coins?

Bit-tech.com discusses the history of our money system and how it got to where it is today. The article reminded me of a conversation I had with a friend the other day that I hardly ever use cash anymore. I use my debit card for normal transactions and my credit card online. I also write very few checks because of online banking. It made me wonder about the future of our coins and currency.

What would happen if people just stopped using coins? It won’t be tomorrow, but 50 years down the road, technology may move on to another form of wealth exchange not involving coins.