Bitcoin: What are crypto-currencies?
Fans of crypto-currencies say they are the future of money and will stop people having to rely on big banks.
Others are worried about their accountability and environmental impact.
Here's how digital cash like Bitcoin could change our lives.
Related topics
- Technology of BusinessUpdates from your News topics will appear in My News and in a collection on the News homepage.
- CryptocurrencyUpdates from your News topics will appear in My News and in a collection on the News homepage.