Special Ink reacts to the chemicals in the paper of suspect bank notes. If ink turns dark, it is probably not a genuine paper bank note and should be considered suspect. A quick and easy way to check notes and to avoid receipt of counterfeit currency.
- Protect yourself from fraudulent notes
- Works on most currencies
- If your mark appears bright yellow, the note is genuine
- If your mark appears dark and stays dark, then the note is fake
- Pen marks will disappear after a few hours