Watermarks

GPTKB entity

Statements (25)
Predicate Object
gptkbp:instanceOf Security feature
gptkbp:createdBy Digital overlay
Varying paper thickness
https://www.w3.org/2000/01/rdf-schema#label Watermarks
gptkbp:inventedBy 13th century
gptkbp:originatedIn gptkb:Italy
gptkbp:relatedTo Counterfeiting
Document security
gptkbp:type Digital watermark
Traditional watermark
gptkbp:usedFor Authentication
Copyright protection
Forgery prevention
gptkbp:usedIn gptkb:newspaper
Official documents
Banknotes
Passports
Digital images
Postage stamps
gptkbp:visibleUnder Transmitted light
Certain angles
gptkbp:bfsParent gptkb:Yaron_Zilberman
gptkb:Billy_Crockett
gptkb:Indian_Passport
gptkbp:bfsLayer 7