Need to pass along an important message on paper without having it accidentally discovered by your archenemy? Using very common household products, you can easily whip up an invisible ink recipe and write out your secret message with the solution. All the recipient needs to do is heat up the paper using a stovetop of light bulb, or brush the surface of the paper with a simple iodine mixture to read the message.
Illustrated below are three simple methods for making your own invisible ink. Spy glasses not included.
Click on image below to enlarge.
Want to master Microsoft Excel and take your work-from-home job prospects to the next level? Jump start your career with our Premium A-to-Z Microsoft Excel Training Bundle from the new Gadget Hacks Shop and get lifetime access to more than 40 hours of Basic to Advanced Instruction on Functions, Formula, Tools, & More.
3 Comments
Great post! Everyone needs to know easy spy tricks.
I know right?! May be exploring more spy tricks for future illustrated posts :)
Sounds good -- I look for them (if they aren't INVISIBLE!) ;)
Share Your Thoughts