Invisible ink could be a thing of the past. Tomorrow’s secret codes may instead be hidden in dots of flammable metals. Burning what researchers are calling infofuses releases an encrypted, readable message, representing a new way chemical reactions can be harnessed to store and transmit information, suggests a study appearing online May 26 in Proceedings of the National Academy of Sciences.
Note: To comment, Science News subscribing members must now establish a separate login relationship with Disqus. Click the Disqus icon below, enter your e-mail and click “forgot password” to reset your password. You may also log into Disqus using Facebook, Twitter or Google.