How does Benjamin Gates make the fingerprint liquid used to get abigails prints in national treasure?

Question

When ben puts the powder in the liquid and stirs it up, and it shows up when a UV light is used i really want to know what it is and how to make it? can anyone tell me??? please

Answer 1

I decided to answer this question since no one else has yet. I strongly suspect there is no such technique.

Other methods to make prints visible might use ninhydrin or gas made up of superglue!

Ninhydrin would react with any protein in the prints.

See also the links below. The second one is commercial.