Digital and printed variable document security. Anti-copy and anti-tamper feature.
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
Safe & Secure Encoding.
Invisible to the naked eye.
Cannot be copied or cannibalized.
Easily reveal differences.
Can be decoded optically or digitally.
Contracts, checks, mortgage coupons, payment receipts, identity documents, birth certificates, tax receipts, hazmat trip permits, labels…
Doc-U-Lok ® Strip
-Can be decoded digitally or with a lens.
-Revealed information is compared to printed information for discrepancies.
Doc-U-Lok Patch behind signature
Doc-U-Lok Patch decoded
Patents & Patents Pending patch.
*For a complete updated list, including foreign filings, please contact Graphic Security Systems Corporation.
Or contact us at patch.:
4450 Jog Road
Lake Worth, FL 33467