Wacom Connected Ink 2020: From liquid to digital ink Lecture Now Available


17/12/2020

Wacom Connected Ink 2020: From liquid to digital ink Lecture Now Available

The presentation of the manager & lead examiner of our Institute entitled “From liquid to Digital ink” that was presentaed at Wacom’s Connected Ink 2020 Event is now available:

Niko Kalantzis

Chartoularios Institute, Greece

From liquid to digital ink

A handwritten signature is more than just a name – it’s your unique sign of commitment, intent, and integrity. As a method of authentication, handwritten signatures are accepted around the world and even have an established legal framework and forensic methodology to investigate and determine their authenticity.

Can this experience and expertise be transferred from pen and paper to a digital biometric format? And if so, what is the path towards achieving equality between the two?

Join eSignature expert Nikolaos “Niko” Kalantzis as he explores:

  • The traditional handwritten signature as a means of authentication
  • The methodology of authenticating a signature
  • The definition of a digital biometric signature and the characteristics that are captured and encoded
  • Introduction to Digitally Captured Signature (DSC) technology
  • How traditional and digital biometric signatures can be compared
  • Usage and incorporation of Digitally Captured Signature (DCS) technology within the field of forensic examination
  • The current state of forgery of Digitally Captured Signatures (DCS): progress & challenges


New Publication: Digitally Captured Signatures (Biometric Signatures) & Forensic Handwriting Examination. A short Introduction


2/12/2020

New Publication: Digitally Captured Signatures (Biometric Signatures) & Forensic Handwriting Examination. A short Introduction

New publication from our Institute’s Manager mr. Niko Kalantzis, in collaboration with Dr. A. Platt from Staffordshire University.

The article entitled “Digitally Captured Signatures (Biometric Signatures) & Forensic Handwriting Examination. A short Introduction ” was published in the 10/2020 issue of the Journal “Penal Justice / Ποινική Δικαιοσύνη”.

Abstract:

Digitally Captured Signatures are being established as a means of authenticating transactions and are gradually replacing traditional ones in transactions both within Greece and internationally. Still, the ease of the transition does not necessarily guarantee the suitability of the new medium. In this article we present the actual form of Digitally Captured Signatures and we present the analysis capabilities they provide to the Handwriting Expert.

You can find the paper here: http://www.nbonline.gr/journals/6/volumes/1243/issues/1784/lemmas/4918896



New Webinar Available: Short introduction to Biometric Signatures


2/12/2020

We are pleased to announce our new Webinar.

The Webinar is a short introduction to what Biometric Signatures (or more correctly Digitally Captured Signatures) are & what they are not.

DURATION:~15′

MATERIAL: WEBINAR

COST: FREE

LANGUAGE: GREEK

CLICK TO OPEN IN NEW TAB

CLICK TO OPEN IN NEW TAB

 



Presentation for the 78th ASQDE Conference – The question of comparability of Digitally Captured Signatures


2/12/2020

Niko Kalantzis: Presentation for the ASQDE 78th Conference (August 2020)

As presented for the 78th conference of the American Society of Questioned Document Examiners (ASQDE)

The question of comparability of Digitally Captured Signatures

Description: When it comes to signatures, the shift from pen & paper to digital media is attainable but not trivial. In the physical world, different writing instruments of the same class form the executed signature in the same manner, but this cannot be said for DCS when captured with different software & hardware solutions (or even using the same hardware but different software only). This study discusses two aspects of this problem. The first part of the study involves the comparison of 1.200 samples created with an XY-plotter (Axidraw v.3), which were collected from 6 identical digitizer pads (Wacom STU-530) and the same software suite (Namirial FirmaCertaForensic) with different combination of the 6 default styli provided with the pads and 4 inking pens (Wacom Bamboo Spark). The comparison of the collected data from the same repeatable stimulus discusses the repeatability and the accuracy of the recorded stimuli from the Wacom STU-530 digitizer. The second part involved the analysis of the extracted (unnormalized) CSV data from different Software and Hardware solutions and the construction of a normalizing procedure for those to be accurately analyzed under the same DCS software analysis suite. Through the analysis of the actual method of recording the biometric channels (X, Y, F and T), the construction of a translation spreadsheet allows the accurate rearrangement of the collected data so that they can be read and analyzed in the ISO 19794-7:2014 compliant csv format of Namirial’s FIrmaCertaForensic DCS signature analysis software.

DURATION:~30′

MATERIAL: CONFERENCE PRESENTATION

COST: FREE

LANGUAGE: ENGLISH (*this presentation is also available in Chinese here)

IMG_3525

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New Publication: Recommendations for capturing signatures digitally to optimize their suitability for forensic handwriting examination


19/11/2020

New Publication: Recommendations for capturing signatures digitally to optimize their suitability for forensic handwriting examination

New publication from the STEFA G8 research team, in which our Institute’s director Niko Kalantzis is a member & contributor.

The article entitled “Recommendations for capturing signatures digitally to optimize their suitability for forensic handwriting examination” was published in the Journal of Forensic Sciences.

Abstract:

The use of digitally captured signatures in everyday course of business increases annually and, compared to pen and paper signatures, provides various advantages concerning the administration of documents. These signatures may also become subjects of a forensic handwriting examination and, therefore, in order to optimize their suitability for this purpose, they should satisfy several requirements. This paper presents recommendations drawn up by forensic handwriting examiners associated with ENFHEX (ENFSI) in a project aimed at defining best practices in forensic examination of digitally captured signatures. The paper is dedicated mainly to hardware and software developers, providers, and user institutions of digitally captured signature technologies to improve their practice to a level optimized for forensic handwriting examination. The most important requirements outlined in this paper concern digitally captured signature data, hardware, and software used to acquire these data, as well as optimized signing conditions. Following these requirements ensures the suitability of signature data for forensic handwriting examination and, consequently, increases the reliability of the associated electronic documents. In spite of rapidly evolving technology, they can serve as a solid basis for understanding and consideration of the optimal use of digitally captured signatures for signing electronic documents.

You can find the paper here: https://onlinelibrary.wiley.com/doi/full/10.1111/1556-4029.14627



New Publication: Features of Digitally Captured Signatures vs. Pen and Paper Signatures: Similar or Completely Different?


16/11/2020

New Publication: Features of Digitally Captured Signatures vs. Pen and Paper Signatures: Similar or Completely Different?

New publication from the STEFA G8 research team, in which our Institute’s director Niko Kalantzis is a member & contributor.
In this publication 2 previous publications of another expert of our Institute, Dr. Michael Pertsinakis, are referenced.
The article entitled “Features of Digitally Captured Signatures vs. Pen and Paper Signatures: Similar or Completely Different?” was published in the Journal “Forensic Science International”.

Abstract:

The question of whether digitally captured signatures and conventional signatures executed with a pen on paper differ in their characteristics is of practical relevance for forensic handwriting examiners. Due to gaps in the current literature, the present research is dedicated to this issue. Eighty persons signed in three conditions: a) with a stylus on a pad, b) with an inking pen on a sticky note attached to a signature pad allowing to obtain a digital and an analogue version on paper of one and the same writing simultaneously, and c) with a pen on paper. The first step was to investigate to what extent the character shape and number of pen lifts differ between the digital and analogue representation of one and the same signature. This revealed minor differences which are due to technical characteristics of the devices used. The observed distortions are of minor practical relevance according to ratings by eight participating forensic handwriting examiners. Subsequently, signature characteristics were compared between the three different writing conditions in a casework-oriented way. Statistical multi-level models indicate significant differences between the three signature types, but minor effect sizes in most of the examined characteristics. From the point of view of the participating handwriting examiners, these factors do not fundamentally restrict the comparability between digitally captured and conventional signatures in practice. However, caution should be exercised when generalising the results, as several factors, such as the usage of different signature pads as well as signatures made with the finger instead of a stylus, could result in more important differences compared to pen and paper signatures.

You can find the paper here: https://doi.org/10.1016/j.forsciint.2020.110587



Wacom Connected Ink 2020: From liquid to digital ink


10/11/2020

Wacom Connected Ink 2020: From liquid to digital ink

The manager & lead examiner of our Institute will be presenting the lecture “From liquid to Digital ink” at Wacom’s Connected Ink 2020 Event.

You can find out more information here:

Niko Kalantzis

Chartoularios Institute, Greece

From liquid to digital ink

A handwritten signature is more than just a name – it’s your unique sign of commitment, intent, and integrity. As a method of authentication, handwritten signatures are accepted around the world and even have an established legal framework and forensic methodology to investigate and determine their authenticity.

Can this experience and expertise be transferred from pen and paper to a digital biometric format? And if so, what is the path towards achieving equality between the two?

Join eSignature expert Nikolaos “Niko” Kalantzis as he explores:

  • The traditional handwritten signature as a means of authentication
  • The methodology of authenticating a signature
  • The definition of a digital biometric signature and the characteristics that are captured and encoded
  • Introduction to Digitally Captured Signature (DSC) technology
  • How traditional and digital biometric signatures can be compared
  • Usage and incorporation of Digitally Captured Signature (DCS) technology within the field of forensic examination
  • The current state of forgery of Digitally Captured Signatures (DCS): progress & challenges


Publication: Assisted vs. Guided Handwriting: a current approach to an old problem


14/09/2020

Publication: Assisted vs. Guided Handwriting: a current approach to an old problem

The publication “Assisted vs. Guided Handwriting: a current approach to an old problem” from Niko Kalantzis & Leonidas Gigogiannos is available on the Nowa Kodyfikacja Prawa Karnego Voll 44 (2017).

ABSTRACT:

A study carried through to determine which writer’s features are apparent in the end result of a guided signature. The examination included 14 participants in total, one of which was left handed. To fulfill its scope, 9 writing features of 20 supported and 20 guided signatures for each participant were examined and the results were related to previous research on the matter of guided signatures and handwriting. This study demon­strated that guided signatures yield a significant volume of writing features belonging to the guider, providing robust evidence on the subject of guided signatures. Several limita­tions were highlighted and proposals for future studies were also made.

You can see the issue here:

Nowa Kodyfikacja Prawa Karnego Vol 44 (2017)

The article can be found here:

https://wuwr.pl/nkp/article/view/8177/7810



Presentation for the 78th ASQDE Conference – The use of Digitally Captured Signature technology in everyday casework: Introducing Wacom’s PHU-111 Clipboard


8/9/2020

Niko Kalantzis: Presentation for the ASQDE 78th Conference (August 2020)

As presented for the 78th conference of the American Society of Questioned Document Examiners (ASQDE)

The use of Digitally Captured Signature technology in everyday casework: collecting & using samples with the Wacom Clipboard

Description: Forensic Handwriting Examination research in Digitally Captured Signature (DCS) usually focuses either on the examination procedure of a disputed DCS or the comparison of signing behavior between glass and paper. Still there is another aspect of DCS technology that can enhance the FHE analysis in everyday casework that focuses on traditional pen and paper signatures (P&P). This presentation focuses on the benefits of using DCS technology to collect comparison samples for P&P cases, the process of sample collection (either for a disputed DCS or a disputed P&P case) as well as the benefits of using the Wacom Clipboard (PHU-111) for the DCS capturing, highlighting on managerial aspects of the process. Forensic Handwriting Examination research in Digitally Captured Signatures (DCS) usually focuses either on the examination procedure of a disputed DCS or the comparison and contrast of signing behavior between glass and paper. Still, there is another aspect of DCS technology that can enhance the FHE analysis in everyday casework, one that focuses on traditional pen and paper (P&P) signatures. This presentation focuses on the benefits of using DCS technology to collect comparison samples for P&P cases, the process of sample collection (either for a disputed DCS or a disputed P&P case), as well as the benefits of using the Wacom Clipboard (PHU-111) for capture. The clipboard allows simultaneous capturing of a signature formation in both A4 paper form and digitally, enhancing the managerial aspects of the process within casework with respect to document creation and handling.

DURATION:~15′

MATERIAL: CONFERENCE PRESENTATION

COST: FREE

LANGUAGE: ENGLISH (*this presentation is also available in Chinese here)

CLICK TO OPEN IN NEW TAB

 

CLICK TO OPEN IN NEW TAB



Presentation for the 78th ASQDE Conference – The current situation of conclusion reporting in Germany & Greece, & the use of the “official” German Verbal Scale of conclusions.


8/9/2020

Thomas Hecker – Niko Kalantzis: Presentation for the ASQDE 78th Conference (August 2020)

Conference presentation from  Thomas Hecker & Niko Kalantzis on the current status of conclusion systems for Handwriting Examination reports in Germany & Greece & brief introduction of the “Official” German Scale.

Description: In Berlin in 2005 Forensic Handwriting Experts from the government sector and part of the private sector agreed to use a common probability scale for verbal conclusions, based on the essay written by Norbert Köller, Kai Nissen, Michael Reiβ and Erwin Sadorf for the standardization of terminology used to express conclusions in expert opinions in handwriting, as appointed by the Forensic Science and Technology/Police Records Commission (of Germany), published in 2004. This verbal scale has been used since in Germany and abroad. In Greece the situation is very different as there is no unique method of reporting conclusions (either by law or by one of the two scientific societies of Greece). The main styles of conclusion reporting are either a. a personal scale of the examiner, b. the ASTM E1658 scale, c. the “ENFHEX” scale and finally d. the “official” German scale. After a short introduction of the systems used and the problems associated with their use, a brief walkthrough of the official German scale’s key points will take place.



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