Document Security

This technology has been used worldwide by government agencies, major corporations, and various industry associations to protect passports, national ID cards, driver’s licenses, birth certificates, tax receipts, bond certificates, trip permits, currencies, stamps, legal documents, digital documents. Through all of these applications, for more than 25 years, we have maintained the top level of security, reliability and customers’ satisfaction.

We offer products to protect the preprinted design of all security documents. Our SI® hidden images can be imbedded into the existing artwork, or they can be added as a separate security layer. They can be reliably printed using almost any printing technology: digital, etching, flexography, gravure, holography, intaglio, letterpress, lithography, silkscreen. 


Optical Decoder

Static SI® Decoded 


UV Light

Decoded with Ultraviolet Light


VIPhoto™ Decoded-Variable


Doc-U-Lok™ Decoded-Variable


LetterScreen Ghost Image-Variable



Attention Government Agencies and Procurement Specialists

H.W. Sands Corp is proud to be a Majority Woman-Owned Small Business, recognized in
markets as an industry leader and a committed Innovative Solutions Provider.