But recently, a particular iMessage feature has entered the chat. Invisible ink — the effect that blurs your messages, making them look like a static-y television unless you’re pressing on it ...
Background on invisible braces After SmileDirectClub shut down in December, leaving many customers in the middle of their treatment, the ADA issued a general statement (which did not name any ...
The original version of this story appeared in Quanta Magazine. For thousands of years, if you wanted to send a secret message, there was basically one way to do it. You’d scramble the message ...