Want to send a message to someone but keep a little bit of mystery? Invisible Ink lets you do just that. Here's how to use it when sending a message.

Magician David Blaine, who just extended his residency at Encore Theater at Wynn Las Vegas and is now starring in Nat Geo's new series 'David Blaine Do Not Attempt', admits he got a tattoo in ...

Credit: Mashable Select "invisible ink" from the menu ... Anyone who taps on the message can reveal its contents, so it's probably best to avoid sending messages you actually want to keep secret.

Before I tap to dissolve the sparkling pixels and reveal the contents of the message ... That's the allure of iMessage's most underrated function: invisible ink. When you send a message or ...

A 110-year-old lemon used by a German WW1 spy to send secret messages from Britain with invisible ink is going on display in MI5’s first ever public exhibition. The blackened and flattened fruit ...

Muller used lemon juice as invisible ink to inform on British troop movements. A warm iron was passed over a letter to reveal the secret messages. The lemon was found in his overcoat when he was ...

A Japanese student aced her assignment about ninja culture by making her own invisible ink from soybeans, a stealthy move that impressed her professor. Eimi Haga, a 19-year-old member of Mie ...