The nature of communication is changing.
Edward Snowden brought the NSA's domestic spying program to center attention and now plenty of casual Internet users care about security. This has spurred the development of some novel technologies to facilitate secure communication online.
Quantum cryptography is probably the most promising of these. It relies on the underlying principles of quantum physics to carry a message from A to B without any third parties interfering.
Here's a rundown on how it works, and why one day your credit card purchases online might be protected and transmitted as photons of light!
More From Business Insider
- LeBron James' 10-year-old son is already being recruited by colleges
- Taylor Swift posted her first bikini pic to Instagram to prevent paparazzi from selling it, after rumors about her belly button
- The 'King of Instagram' can't find anyone to buy his Lamborghini on eBay
- Edward Snowden
- Quantum cryptography