EP3256327B1 - Identification document comprising a printed personal image - Google Patents

Description

The present invention relates to the field of identification documents.

The disclosure WO 2014/111405 A1 reveals one
Identification document according to the preamble of claim 1. A face image of a person is arranged on a front side of the identification document. The identification document also has a security feature. The security feature is, for example, a representation of the face image of the person in the form of a pattern. The security feature is not recognizable when illuminated with white light. When the security feature is illuminated with UV radiation, however, the facial image can be seen.

The disclosure DE 10 2013 203 669 A1 discloses a document which may be an electronic passport. The document includes a personalization sheet. The back of the personalization sheet forms a personalization page. The personalization page has a passport photo with an image of a holder of the document.

A modern identification document such as an identity card or passport includes not only security features that serve to check the authenticity of the identification document, but also a personal image of a person to be identified.

When attempting to forge an identification document, however, not only the security features, but also the person's image are usually manipulated. While the authenticity of some security features can be checked automatically, it is difficult to automatically check the authenticity of person images. One reason for this is the different qualities of person pictures and last but not least the different characteristics of person faces.

It is therefore the object of the present invention to provide an identification document in which an automated verification of the authenticity of a person's image can be carried out.

This object is solved by the features of the independent claims. Advantageous forms of further training are the subject of the dependent claims, the description and the accompanying figures.

The present invention is based on the knowledge that the above object by printing the person's image with at least two different printing inks, which have different optical properties in the same wavelength range, for example in the infrared wavelength range or in the ultraviolet wavelength range.

According to a first aspect, the invention relates to an identification document according to claim 1.

By using two different printing inks for printing the person image, different optical properties of the person image in the predetermined wavelength range are realized, which can be used to check the authenticity of the person image. For example, it can be achieved that certain color components, in particular black components, of the person's image are infrared-absorbing, while the remaining parts of the person's image in the infrared wavelength range are light-transparent or reflective. However, it is possible for different black areas of the person image to be printed with black colors which have different optical properties in the infrared wavelength range or in the ultraviolet wavelength range. The result of this is that the authenticity of the printed person's image can be determined automatically by capturing and evaluating the light-absorbing and possibly non-absorbing print areas of the person's image.

If the particular wavelength range is the infrared range, then when infrared printing inks are used, the parts visible to humans in the visible wavelength range can look the same, so that the entire image of the person in the visible wavelength range can be seen undisturbed.

According to one embodiment, the image comprises a plurality of first printing areas with the first printing ink and a plurality of second printing areas with the second printing ink.

According to one embodiment, the predetermined wavelength range is the infrared wavelength range or the ultraviolet wavelength range. The different optical properties of the printing inks can be realized, for example, by adding pigments to the first printing ink or to the second printing ink.

According to one embodiment, the second printing ink is designed to reflect light in the predetermined wavelength range, the second printing ink being light-transparent in the second wavelength range. The reflective properties of the second ink can be achieved by adding pigments that absorb or reflect the light.

According to one embodiment, the first print area and the second print area are arranged in a test matrix, an arrangement of the first print area and an arrangement of the second print area in the test matrix being dependent on a person's date or on a document date or being determined by coding a person's date or a document date .

The personal date can have a name, a birthday, an address or any other information relating to the person depicted on the person's picture. The document date can have a document number, a date of issue or an expiration date, with or without a check digit, or an indication that references the document, or only part of the aforementioned data. The document date can also have at least one date of a machine-readable zone or parts thereof of the identification document. The arrangements of the printing areas can thus be assigned to specific personal data and / or document data. This assignment can be predefined or determined by coding.

According to one embodiment, the check matrix has a number of columns and a number of lines, the number of columns and the number of lines depending on a person date or a document date or being determined by coding a person date or a document date. In this way it is achieved that a size of the test matrix can be selected dynamically and thus, according to one embodiment, the number of the first pressure areas and the number of the second pressure areas can also be selected dynamically. For example, the number of columns and the number of rows of the test matrix can be different for different personal data or document data or for different codes.

According to one embodiment, the respective arrangement is determined by a binary or binarized personal data or by a binary or binarized document date, or the respective coding comprises asymmetrical or symmetrical encryption or digital signature of the personal data or the Document date or a hash value from the personal date or the document date or from a combination of both or parts thereof.

If the person date or the document date is already available in binary form, the respective binary position can, for example, code a position in the test matrix. If the matrix fields are numbered consecutively, for example, the fifth binary position can indicate that it is a fifth entry field in the test matrix. By grouping the binary digits, however, any addressing of the test matrix fields can be achieved. The value of the respective binary number, on the other hand, can indicate whether a first print area with the first print color or a second print area with the second print color should be arranged in the respective test matrix field. For example, the binary number 1 can indicate the first printing ink and the binary number 0 the second printing ink, or vice versa.

If, on the other hand, the personal date or the document date are not in a binary form, they can be converted into a binary form by binarization. A binary number can be assigned to each letter, for example. Similarly, Arabic numerals can be represented directly in binary. With the binarization achieved in this way, the matrix can be occupied in the first and second printing areas as explained above.

However, the arrangement of the first and second print areas, that is to say the assignment of the matrix fields of the test matrix, can also be achieved by encrypting a personal data and / or a document data. This encryption can be symmetrical encryption or asymmetrical encryption using cryptographic keys. In addition, one or more hash values can be generated from the personal date and / or from the document date using a predetermined hash value mapping. The encryption or the hash value formation in turn produces binary representations which, as stated above, indicate the arrangements of the first and second print areas and thus the matrix assignment. Furthermore, the encryption can take place via an assignment table in which, for example, different hash values and different binary values for the matrix fields are stored.

If, for example, the test matrix has two columns and three rows, there are a total of six matrix fields, which can be covered either with the first print area or with the second print area. This results in an arrangement pattern of the first pressure areas and the second pressure areas, which can be checked on the basis of a reference arrangement pattern or, when the arrangement pattern is designed, by means of a binary reference number.

Either the first printing area and the second printing area or a plurality of first printing areas and second printing areas form a bar code or a multidimensional and optically detectable code, the code providing coded data, in particular a personal date or a document date. By arranging the first printing areas and by arranging the second printing areas, graphic patterns can be generated which, for example, form a bar code or a two-dimensional QR code. The optically detectable code can provide coded data, for example a coded person date or a coded document date. The optical detection of the code and the decoding allow the data or checksums or hash values or parts thereof to be retrieved and, for example, compared with reference data.

According to one embodiment, the real data can also be read in, for example by means of software, and form the code according to a corresponding algorithm. The code calculated on the basis of the person or document data read (or parts thereof) can then be compared to match the code read.

When using a digital signature, a signature can be formed from the real data (share) in document production with the private key, which signature is used in the coding of the test matrix or certain values or parts of the signature or via a mapping table are used. During the check, the matrix code can then be read, possibly supplemented with other data of the identification document, if, for example, the storage capacity of the matrix code is possibly too limited for a secure signature, and the authenticity of the real data (parts) can be determined with the public key.

According to one embodiment, the first print area and the second print area form entries in rows or columns of the test matrix. Check matrix fields are occupied by the entries. The check matrix fields can be rectangular, while the entries can be rectangular or following a printing process. For example, the first printing ink can fill out a test matrix field completely or incompletely. However, the test matrix fields can also be divided differently. It also does not have to be the same forms of the pressure areas within the test matrix.

According to one embodiment, a predetermined section of the person's image is printed with the first printing ink, in particular a head region or an eye region of the person's image. In this way, for example, geometric arrangements of facial components, such as eyes, nose or chin or mouth, can be selected for the use of the first printing ink, since these are already distributed or divided in the person image.

According to one embodiment, the test matrix comprises two rows and two columns. In this way, the most frequently absorbing facial components, such as eyes and mouth, can be divided by means of a central cross in the test matrix and printed with the first or the second printing ink. In this way, a rough division is achieved, which also enables the detection or testing of less absorbent parts of the face.

According to one embodiment, the first printing ink is black or has a soot component that absorbs infrared light, and the second printing ink is red, green, yellow or black. The first printing ink can generally be provided with pigments which absorb light in the specific wavelength range. The term "black" here means a printing ink that has black components. The second printing ink can be of any color.

According to a second aspect, the invention relates to a method according to claim 9.

According to one embodiment, the invention relates to a method for producing an identification document with determining an arrangement of the first printing area and the second printing area in a test matrix as a function of a person date or from a document date, or coding a person date or a document date in order to arrange the first printing area and to determine the second pressure range in a test matrix.

According to a further embodiment, the invention relates to a method with at least one of the following steps to determine the arrangement of the first printing area and the second printing area in a test matrix: binarizing a document date or a person date, asymmetrical or symmetrical encryption of a person date or a document date, forming a hash value or the formation of a digital signature from a personal date or a document date.

According to a third aspect, the invention relates to a document reader according to claim 12.

The document reader is designed to detect the authenticity of the identification document according to the invention.

The image recording device can be designed to effect optical recordings in the predetermined wavelength range, for example in the infrared wavelength range or in the ultraviolet wavelength range. The image recording device is, for example, a scanner or a digital camera which outputs digital image data which form or represent the recording of the printed person image. The processor can be designed to sort the pressure areas according to a threshold value, in particular according to a gray level threshold value, and to assign those pressure areas that fall below a gray threshold value, for example 50, to the first, light-absorbing pressure area.

According to one embodiment, the document reading device comprises a light source which is designed to illuminate the identification document with light in the predetermined wavelength range, in particular in the infrared wavelength range or ultraviolet wavelength range, for the purpose of recording the person's image. The light source can be, for example, an infrared light source or an ultraviolet light source. The lighting can include, for example, top lighting or through lighting.

According to one embodiment, the document reader comprises a document support which is light-transparent in the predetermined wavelength range. In this case, the light source can be arranged below the document support and illuminate the placed identification document through the document support in order to obtain the image of the person.

According to one embodiment, the document reader is a mobile document reader, for example in the form of a smartphone. In this case, the light source can be realized by the integrated image illumination of the smartphone, which is designed or controlled to emit light in the predetermined wavelength range.

According to one embodiment, the processor is designed to detect an arrangement of the first printing area and an arrangement of the second printing area in the recording of the printed image, and the detected arrangement as a multidimensional code to decode, decrypt or compare with a reference arrangement in order to determine the authenticity of the identification document.

The arrangements of the first and the second printing area encode, for example, as stated above, a binary number which can be compared with a reference binary number in order to determine the authenticity of the printed person image.

According to one embodiment, the arrangements of the first to second printing areas form a multidimensional code, in particular an optically detectable code, such as a QR code, which can be decoded in a manner known per se, in order to obtain coded information or coded data and for this Check the authenticity of the identification document.

According to one embodiment, the arrangements of the first and the second printing area form a graphic pattern which can be compared with a graphic reference pattern in order to determine the authenticity of the identification document.

Fig. 1

eine schematische Darstellung eines Identifikationsdokumentes;

Fig. 2a bis Fig. 2c

Darstellungen einer Prüfmatrix;

Fig. 3a bis Fig. 3c

Darstellungen von Prüfmatrizen;

Fig. 4a bis 4n

Darstellungen von Prüfmatrizen;

Fig. 5a bis 5g

Darstellungen von Prüfmatrizen;

Fig. 6

schematisches Ablaufdiagramm eines Verfahrens zum Herstellen eines Identifikationsdokumentes; und

Fig. 7

schematisches Diagramm eines Dokumentenlesegerätes.

Further embodiments of the invention are explained in more detail with reference to the accompanying drawings. Show it:

Fig. 1

a schematic representation of an identification document;

2a to 2c

Representations of a test matrix;

3a to 3c

Representations of test matrices;

4a to 4n

Representations of test matrices;

5a to 5g

Representations of test matrices;

Fig. 6

schematic flow diagram of a method for producing an identification document; and

Fig. 7

schematic diagram of a document reader.

Fig. 1 shows a schematic view of an identification document 100, which has a printed person image 101. The printed person image is printed with a first printing ink 104 in a first printing area 103 and with a second printing ink 106 in a second printing area 105.

In the in Fig. 1 In the illustrated embodiment, the person image 101 comprises a plurality of first pressure areas 103 and a plurality of second pressure areas 105, which are arranged in a test matrix 108, which can be a 2x2 test matrix, for example.

The occupancy of the matrix fields by the first printing areas 103 and by the second printing areas 105 is, for example, personalized and / or dependent on at least one document date. A document date can, for example, be arranged in a machine-readable zone 107 of the identification document 100. The document date can also be a document number, a date of issue or an expiry date of the identification document. Furthermore, one or more check digits of the identification document 100 can be used to determine the matrix assignment by the pressure areas 103, 106. However, the matrix assignment can also be binary or binarized image information or binarized or binary information about a face image of the person in visible light. For this purpose, for example, binary or binarized biometric features can be used to determine the matrix assignment.

To determine or code the matrix assignment, however, a fixed translation table or a hash value formation on the basis of the data, in particular on the basis of an identification date or a personal data, can be used for a fixed value which specifies the matrix assignment or coding. Using the matrix coding or matrix assignment, a personalization of the person's image, in particular the face of the person depicted, can be generated in a predetermined wavelength range, for example in the infrared range or in the ultraviolet range, and used for the authenticity check.

According to one embodiment, symmetrical or asymmetrical encryption using, for example, a private cryptographic key or an authorized personalization instance of a personal data or a document data can be used to determine the assignment of the test matrix with the first and second print areas 103, 106.

Analogously to a passive authentication method, according to one embodiment, a publicly available list of the cryptographic keys used for decryption or their bilateral exchange can be provided, so that an authenticity check can be carried out on this basis. In this way, the advantage can be achieved that in order to check the authenticity of the person's image, it is not necessary to read out a chip which may be integrated in the identification document 100, so that the hardware requirements placed on such chips or identification documents can be reduced.

According to one embodiment, the identification document 100 comprises a plurality of first print areas 103 and second print areas 106, which for example form a 3x2 matrix or a 3x3 matrix or a 2x3 matrix or even larger matrices.

According to one embodiment, the assignment of the test matrix fields with the first print areas 103 and 106 can define a binary coding or a + / - coding, a binary number 1 or a plus sign indicating the presence of the first printing area and a binary number 0 or a minus sign indicates the absence of the first pressure area 103 or the presence of the second pressure area 105, or vice versa. The occupancy of the test matrix fields of the test matrix 108 by the first print areas 103 and by the second print areas 106 thus results in an occupancy pattern that represents a coding.

In one embodiment, the size of the test matrix 108 itself may be dynamic. In this case, the number of columns and / or rows of the test matrix depends on a person's date or on a document date or on a coding of the aforementioned data, as described above and below.

According to one embodiment, the first printing ink 104 is designed to absorb infrared light. By assigning the test matrix 108 to first printing areas 103, in which the first printing ink 104 is arranged, a matrix pattern thus results which is determined by first printing areas, which are infrared-absorbing, as shown in FIG Fig. 2 using the example of the 2 × 2 test matrix 108 with first pressure areas 103 and with second pressure areas 105. Here are, as in Fig. 2 shown, printed with the first infrared-absorbing printing ink 104 on facial areas, such as a hair area 201, an eye area 203 or a mouth area 205, which have increased black components. With the plus or minus sign, pressure fields are marked which have infrared-absorbing components (plus sign) or not (minus sign).

Fig. 3 illustrates this using the in Fig. 2 Procedure described illustrated embodiment using a 2x3 test matrix 301 with two columns and three rows. Like it in Fig. 3 is shown, the first pressure areas 103 and the second pressure areas 105 are each arranged alternately, so that the in Fig. 3b absorption pattern shown results. The absorption pattern is determined by the use of the first light-absorbing printing ink 104, for example for the printing of hair areas, eye areas or mouth areas according to one in the person image Fig. 3c depicted person.

The in the Fig. 2 and 3rd Arrangements of the first pressure areas 103 and the second pressure areas 105 shown can be used for different person faces, because these arrangements can ensure that the always darker face areas, such as hair areas or eye areas, are arranged in a checkerboard pattern of the first pressure area 103 with the first, light-absorbing Ink 104 can be detected.

Like it in the Fig. 2 and 3rd is shown, the second pressure ranges 105 can be light-transparent or light-reflecting in the predetermined wavelength range, for example in the infrared wavelength range. According to one embodiment, the second pressure ranges 105 can be light-neutral in the predetermined wavelength range. In the in the Fig. 2 and 3rd In the arrangements shown, the first print areas 103 and the second print areas 105, which each determine an occupancy pattern or occupancy of the respective test matrix 108, 301, can be predefined for a document type for different person images.

Fig. 4 shows the person image 101 with first print areas 103 and with second print areas 105, which is arranged in the test matrix 108, the number of rows and columns of which is fixedly defined for different person pictures and is, for example, 2 in each case.

In contrast to those in the Fig. 2 and 3rd The exemplary embodiments shown, in which both the number of rows and columns of the test matrix and the assignment of the test matrix fields are fixed and thus not personalized, are the assignment of the test matrix fields, ie the arrangement of the first print areas 103 and / or the arrangement of the second print areas 105 personified or coded in the test matrix 108. This results, for example, in the 4a to 4n Arrangement pattern shown with first printing areas 103 and with second printing areas 105. These arrangement patterns, which represent the occupancy of a test matrix, can be achieved, for example, by a binary or binarized person date or document date or by encryption or coding of the person date or the document date. For example, each field of the test matrix can be numbered, so that the test matrix fields can be clearly assigned, for example on the basis of the coding.

Fig. 5 shows the person image 101 in which the number of columns and the number of lines of a test matrix and thus the number of test matrix fields which can be occupied by the first print areas 103 and the second print areas 105 are personalized or coded. The number of rows and columns of the check matrix can be determined, for example, by a binary or binarized person date or document date or by encryption of a document date or a person date or another date, as was explained above. In the in Fig. 4 illustrated embodiment, however, the arrangements of the first pressure areas 103 and the second pressure areas 105 can be personalized and by binary or binarized representations of a Person date or a document date or by coding a person date or a document date or by encrypting a person date or a document date.

Fig. 5a shows the 2x2 test matrix 108 with two rows and two columns, in which the print areas 103 and 105 are arranged. Fig. 5b shows an example of the 2x3 matrix 301, in which the print areas 103 and 105 are arranged in a checkerboard fashion.

Fig. 5c shows the 2x3 matrix 301, in which the pressure areas 103, as shown in Fig. 5c arranged by way of example, form a geometric pattern.

Fig. 5d shows an exemplary 3x3 matrix 501 with the arrangement of the first pressure areas 103.

Fig. 5e shows an exemplary 2 × 4 test matrix 503 with first pressure areas 103 and with second pressure areas 105.

Fig. 5f shows an exemplary 3x4 test matrix 505 with print areas 103 and 105.

5g shows a further assignment of the 3x4 matrix 505 with the arrangement of the first and second pressure areas 103, 105 shown.

Like it in Fig. 5 is shown, the first and the second printing areas 103, 105 can occupy different test matrix fields of the respective test matrix, so that in different test matrix fields the first printing ink 104, which is light-absorbing, and the second printing ink 106 can be arranged according to an imaging specification or according to a coding specification as stated above.

According to one embodiment, the first and the second printing areas 103, 105 can form an optically detectable code, for example a two-dimensional code, which can be optically detected and decoded in a manner known per se.

That in the 1 to 5 illustrated person image 101 is printed with the first printing ink 104 and the second printing ink 106. The in the 1 to 5 shown Printing areas 103, 105 define printing fields in which the first printing ink 103 is arranged. The pressure areas 103, 105 themselves and the test matrices are in the 1 to 5 shown only for clarification and not printed with person image 101. Rather, they demonstrate the rasterization of the person image 101. The print areas 103 and 105 are also not superimposed on the person image. Rather, the person image 101 itself is printed using the first printing ink 104 and the second printing ink 106 such that the first printing areas 103 and the second printing areas 105 with the exemplary arrangements are shown in FIGS 1 to 5 surrender.

Fig. 6 shows a schematic flow diagram of a method for producing an identification document, for example the identification document 100 according to the invention with the person image 101 as well as with the in the 2 to 5 Arrangements of the first printing areas, which are printed with the first printing ink 105 in a step 601, and the second printing areas 105, which are printed with the second printing ink 106 in a step 603, are shown as examples. Steps 601, 603 can be carried out sequentially in any order or simultaneously. The first and second printing inks 104, 106 can be printed on a document body, which is made of plastic, for example, and comprises laminated layers.

Fig. 7 schematically shows a document reader 700, which can be used, for example, to check the authenticity of the identification document 100 shown above with the person image 101.

The document reader 700 comprises an image recording device 701, which is designed to record a printed person image, for example the printed person image 101, in a predetermined light wave range, for example in an infrared wavelength range or in an ultraviolet wavelength range.

The image recording device 701 can be an image camera, a line scanner or a flat board scanner.

The document reader 700 further comprises a processor 703, which is designed to capture a first print area of the printed person image, which is light-absorbing in the predetermined light wavelength range, and to capture a second print area of the printed person image, which is not light-absorbing in the predetermined wavelength range is to record the authenticity of the identification document.

The processor can be designed to detect the first pressure areas 103 in the receptacle, which are light-absorbing and thus darker. Here, the processor can use, for example, a threshold value, which can be a gray level threshold value, and image pixels, which detect a gray value below the gray level threshold value, for example below a gray level threshold value of 50, and assign these to the first printing area 103. The remaining printing areas are the second printing areas 105, in which the first printing ink 104 was not detected. The processor 703 can in this case, for example, assume a predefined or dynamic matrix with a number of rows and columns in order to place a test matrix grid over the recording in order to detect an arrangement of the first pressure areas 103 and the second pressure areas 105.

Based on the detected arrangement of the first printing areas 103 and the arrangement of the second printing areas 105, the processor 703 can, for example, use reference arrangements in order to compare the detected arrangements of the printing areas 103, 105 with reference arrangements in order to detect the authenticity of the person image. However, the processor 703 can be designed to detect the arrangements of the print areas 103, 105 as an optically detectable code and to decode them in a manner known per se in order to obtain the decoded information and to provide this with reference information, which can include reference data, to compare. The processor 703 can also be designed to understand the arrangements of the print areas 103, 105 as a binary number and to decrypt them using a cryptographic key, for example a private cryptographic key, in the case of asymmetrical encryption.

According to one embodiment, the document reader 700 further comprises a document support 705, which is light-transparent in the predetermined wavelength range and which is provided, an in Fig. 7 identification document, not shown, for example, to record the identification document 100. To illuminate the identification document, the document reader 700 comprises a light source 707, which is designed to emit light in the predetermined wavelength range, for example infrared light or ultraviolet light, in order to illuminate the identification document lying on the support 705. In the in Fig. 7 In the illustrated embodiment, the light source 707 is arranged above the document support 705, so that the identification document lying on the document support 705 is illuminated. This results in dark areas in the image, which arise due to the light absorption in the first pressure areas 103.

According to one embodiment, however, the light source 707 can also be arranged below the document support 705, so that the image recording device 701 can reflect reflected light.

According to a further embodiment, the document reader 700 can comprise a memory in which, for example, reference data, for example registered identification numbers or reference arrangements, are stored. A private or a public cryptographic key can also be stored in the memory in order to decode the arrangements. The decoding rule for decoding a graphic code can also be contained in the memory.

According to one embodiment, the document reader 700 can further include a communication interface to retrieve reference arrangements or reference data of the aforementioned type or further reference data via a communication network from a remote server or to transmit the detected arrangements to the remote server for decoding or decryption and for a result the verification or decoding or decryption carried out by the reference server to verify the authenticity of the identification document.

Reference numerals

100

Identification document

101

Person picture

103

first print area

104

first ink

105

second pressure range

106

second ink

107

machine readable zone

108

Test matrix

201

Section of hair

203

Eye area

205

Mouth area

301

Test matrix

501

Test matrix

503

Test matrix

505

Test matrix

700

Document reader

701

Image acquisition device

703

processor

705

Document pad

707

Light source

Claims (14)

1. An identification document (100) comprising a personal image (101), which is printed using a first printing ink (104) in a first printing region (103) and a second printing ink (106) in a second printing region (105), wherein the first printing ink (104) is designed to absorb light in a predetermined light wavelength range, and wherein the second printing ink (106) is designed not to absorb light in said predetermined wavelength range,
   characterized in that either the first printing region (103) and the second printing region (105) or a plurality of first printing regions (103) and second printing regions (105) form a barcode or a multi-dimensional and optically detectable code, wherein the code provides coded data, in particular a personal datum or a document datum.
2. The identification document (100) according to claim 1, wherein the predetermined wavelength range is an infrared wavelength range or ultraviolet wavelength range.
3. The identification document (100) according to claim 1 or 2, wherein the second printing ink (106) is designed to reflect light in the predetermined wavelength range, or wherein the second printing ink (106) is transparent to light in the second wavelength range.
4. The identification document (100) according to one of the preceding claims, wherein the first printing region (103) and the second printing region (105) are arranged in a test matrix (108), wherein an arrangement of the first printing region (103) and an arrangement of the second printing region (105) in the test matrix is subject to a personal datum or a document datum or is determined by a coding of a personal datum or a document datum.
5. The identification document (100) according to claim 4, wherein the test matrix (108) exhibits a number of columns and a number of lines, wherein the number of columns and the number of lines are contingent upon a personal datum or a document datum or are determined by a coding of a personal datum or a document datum.
6. The identification document (100) according to one of claims 4 or 5, wherein the respective arrangement is determined by a binary or binarized personal datum or by a binary or binarized document datum, or wherein the respective coding comprises an asymmetrical or symmetrical encoding of the personal datum or document datum or a generation of a hash value from the personal datum or the document datum.
7. The identification document (100) according to one of the preceding claims, wherein a predetermined detail of the personal image (101) is printed with the first printing ink, in particular a region of the head or eye of the personal image.
8. The identification document (100) according to one of the preceding claims, wherein the first printing ink (104) is black or has an infrared light-absorbing carbon black content, and wherein the second printing ink (106) is red, green, yellow or black.
9. A method for producing an identification document, comprising:

   printing (601, 603) a personal image on a document body using a first printing ink which is designed to absorb light in a predetermined light wavelength range, and using a second printing ink which is designed not to absorb light in the predetermined wavelength range, wherein the first printing ink is printed in a first printing region of the personal image, and wherein the second printing ink is printed in a second printing region of the personal image,

   wherein the first printing region (103) and the second printing region (105) or a plurality of first printing regions (103) and second printing regions (105) form a barcode or a multi-dimensional and optically detectable code, wherein the code provides coded data, in particular a personal datum or a document datum.
10. The method according to claim 9, comprising:

    determining an arrangement of the first printing region and the second printing region in a test matrix as a function of a personal datum or a document datum; or

    coding a personal datum or document datum in order to determine an arrangement of the first printing region and the second printing region in a test matrix.
11. The method according to claim 10, comprising at least one of the following steps for determining the arrangement of the first printing region and the second printing region in a test matrix: binarizing a document datum or a personal datum, asymmetrical or symmetrical encoding or digital signing of a personal datum or document datum or parts thereof, generating a hash value or a digital signature from a personal datum or a document datum or from parts thereof.
12. A document reader (700) for detecting the authenticity of an identification document according to one of claims 1 to 8, comprising:

    an imaging device (701) for capturing a photographic image of the printed personal image in a predetermined light wavelength range; and

    a processor (703), which is designed to detect a first printing region of the printed personal image in the photographic image which absorbs light in the predetermined wavelength range and to detect a second printing region of the printed personal image which does not absorb light in the predetermined wavelength range in order to detect the authenticity of the identification document,

    wherein the first printing region (103) and the second printing region (105) or a plurality of first printing regions (103) and second printing regions (105) form a barcode or a multi-dimensional and optically detectable code, wherein the code provides coded data, in particular a personal datum or a document datum.
13. The document reader according to claim 12, wherein the processor (703) is designed to detect an arrangement of the first printing region and an arrangement of the second printing region in the photographic image of the printed image and to decode the detected arrangement as a multi-dimensional code, to decrypt it or to compare it to a reference arrangement in order to determine the authenticity of the identification document,
14. The document reader according to claim 12 or 13, comprising a light source (707), which is designed to illuminate the identification document (100) with light in the predetermined wavelength range for the capturing of the photographic image.

Images