Uni Super Ink becomes trapped in paper, helping prevent criminal check washing and other document alteration. It is also fade and water-resistant ink as well as acid-free and archival quality.

Dye Ink vs. Pigmented Ink - A Critical Difference
Using a pen with Pigmented Ink instead of Dye Ink can help prevent identity theft. Uni-ball Pens contain Pigmented Ink.

Dye Inks Don't Work
They stain the paper, changing the color of the paper and its fibers. Removing dye ink is easy. Using bleach or common household chemicals, thieves can wash the paper back to its natural color.

Pigmented Ink Helps Prevent Identity Theft
Pigmented Ink changes the paper itself. It's not a dye. The ink weaves its way into the paper's fibers where the ink's pigments (discrete color particles) embed themselves into the heart of the paper, making it impenetrable.