The invention relates to an absorbent medium for improving the overprintability, in particular by inkjet printing, of a security element, in particular an optically variable security element, comprising a binder, at least one pigment and an in particular aqueous solvent. The invention furthermore relates to a transfer film with an absorbent layer made of such an absorbent medium as well as a method for personalizing a security element using such a transfer film.

Aspects described herein may provide detection of a physical characteristic of a credential, thereby allowing for authentication of the credential. According to some aspects, these and other benefits may be achieved by detecting the physical characteristic with the credential. An image of a credential may be received. An optical characteristic of a secure feature of the credential may be determined. An expected optical characteristic of the secure feature may be determined based on known properties of the secure feature. A determination as to whether the credential is authentic may be based on a comparison of the determined optical characteristic of the secure feature to the expected optical characteristic of the secure feature.

Aspects described herein may provide detection of a physical characteristic of a credential, thereby allowing for authentication of the credential. According to some aspects, these and other benefits may be achieved by detecting the physical characteristic with the credential. An image of a credential may be received. An optical characteristic of a secure feature of the credential may be determined. An expected optical characteristic of the secure feature may be determined based on known properties of the secure feature. A determination as to whether the credential is authentic may be based on a comparison of the determined optical characteristic of the secure feature to the expected optical characteristic of the secure feature.

A security document is disclosed to include an image area provided on a front side of the document that includes image content, an information area provided on the front side that includes informational content, and a security feature including a pattern of perforations provided in an overlapping relationship with the image area and the information area so as to simultaneously bind and secure the image content with the informational content.

A security document is disclosed to include an image area provided on a front side of the document that includes image content, an information area provided on the front side that includes informational content, and a security feature including a pattern of perforations provided in an overlapping relationship with the image area and the information area so as to simultaneously bind and secure the image content with the informational content.

A system is capable of generating identifications that include distinctive line patterns corresponding to different portions of secure customer information. In some implementations, data indicating one or more linear patterns and data indicating customer information to be embedded within an identification document is obtained. Respective subsets of the customer information are assigned to each of the one or more linear patterns. A photographic image to be included within the identification document is then modified based at least on generating a portion of the photographic image that is composed of at least one of the one or more linear patterns. The modified photographic image is then disposed on an identification document to yield embedded customer information.

A system is capable of generating identifications that include distinctive line patterns corresponding to different portions of secure customer information. In some implementations, data indicating one or more linear patterns and data indicating customer information to be embedded within an identification document is obtained. Respective subsets of the customer information are assigned to each of the one or more linear patterns. A photographic image to be included within the identification document is then modified based at least on generating a portion of the photographic image that is composed of at least one of the one or more linear patterns. The modified photographic image is then disposed on an identification document to yield embedded customer information.

A process for authenticating a painting includes determining whether a posterized HSV model of a digital photograph contains one or more steganographic symbols. A process for preparing a painting for authentication, includes providing a digital photograph of the painting in the RGB color model, converting the digital photograph to a CMYK color model, converting the CMYK model of the digital photograph to an HSV color model of the digital photograph and posterizing the HSV model of the digital photograph. A system for preparing a painting for authentication includes a processor and a computer-readable memory component containing a digital photograph of the painting in the RGB color model. The processor is configured to convert the digital photograph to a CMYK color model, convert the CMYK model of the digital photograph to an HSV color model of the digital photograph and posterize the HSV model of the digital photograph.

A process for authenticating a painting includes determining whether a posterized HSV model of a digital photograph contains one or more steganographic symbols. A process for preparing a painting for authentication, includes providing a digital photograph of the painting in the RGB color model, converting the digital photograph to a CMYK color model, converting the CMYK model of the digital photograph to an HSV color model of the digital photograph and posterizing the HSV model of the digital photograph. A system for preparing a painting for authentication includes a processor and a computer-readable memory component containing a digital photograph of the painting in the RGB color model. The processor is configured to convert the digital photograph to a CMYK color model, convert the CMYK model of the digital photograph to an HSV color model of the digital photograph and posterize the HSV model of the digital photograph.

A process for authenticating a painting includes determining whether a posterized HSV model of a digital photograph contains one or more steganographic symbols. A process for preparing a painting for authentication, includes providing a digital photograph of the painting in the RGB color model, converting the digital photograph to a CMYK color model, converting the CMYK model of the digital photograph to an HSV color model of the digital photograph and posterizing the HSV model of the digital photograph. A system for preparing a painting for authentication includes a processor and a computer-readable memory component containing a digital photograph of the painting in the RGB color model. The processor is configured to convert the digital photograph to a CMYK color model, convert the CMYK model of the digital photograph to an HSV color model of the digital photograph and posterize the HSV model of the digital photograph.