Thursday, March 8, 2012

SPY TIP: Invisible Ink

Yes, if you wanted, you could always buy invisible ink that appears when you shine a blacklight on it. But your friend would have to get one, too so they could read it. But if you're not into spending money or, you're just plain broke, there's a cheaper way that works just as well. So, are you ready for the possibly life changing secret invisible ink formula?

It is... Lemon Juice

That's all. You could add vinegar, too, but, it would smell bad. Just paint with it on the paper and it will appear invisible until it is held over a candle. Now, I know you're not a five year old (if so, that's awesome) and this is already pretty obvious but, please, don't catch the paper on fire. If you can't use a candle you can also use a hairdryer. A hairdrier would not be so useful if you were trying to be quiet though. Spying is a dangerous business.


  1. If you wanted to write in invisible ink on the computer, all you would have to do is make your words white. It make them appear, highlight them!

    1. Mmmmm, but there's a problem there, as there is with invisible ink in life.Say someone hacked into your email and saw a blank email in your inbox. Being as you can't send an email without there being text in it, they would know that you had made the words white. Though IS a way to shake a person off your account. . . I'll give you a shout, Nightfury.

    2. In that case, you would write fake words before the invisible writing.

    3. I think I'll use that, Nightfury! Found my secret message in the letter? ;-D