|
EP1926035A1
|
|
Method for generating human-readable and machine-readable documents
|
|
EP1840777A1
|
|
Method for inserting a digital marking in a digital document
|
|
EP1610491A1
|
|
Method for documenting at least one verification of an analog or digital document and creation of such a document
|
|
MXPA04011277A
|
|
Visible authentication patterns for printed document.
|
|
EP1349368A1
|
|
Method for marking a dataset
|
|
US6782116B1
|
|
Apparatus and methods for improving detection of watermarks in content that has undergone a lossy transformation
|
|
US6751336B2
|
|
Digital authentication with digital and analog documents
|
|
DE10211981A1
|
|
Process for increasing the information density of a bar code, as well as bar code
|
|
DE10211982A1
|
|
Method for marking a data record
|
|
DE10134682A1
|
|
Method and device for confirming the authenticity of a document and electronic safe for storing the data
|
|
DE10134489A1
|
|
Asymmetric cryptographic procedure
|
