CHA Technology & Digital Tools 3 — Questions and Answers
Question 1: Which of the following best describes the role of Automated Handwriting Analysis (AHA) software in a CHA's workflow?
- It replaces the need for a human examiner in all forgery cases
- It serves as a screening or decision-support tool, with the examiner making the final determination (Correct answer)
- It is used exclusively for personality profiling, not document examination
- It generates legally binding opinions without human review
Correct answer: It serves as a screening or decision-support tool, with the examiner making the final determination
AHA software assists by quantifying features and flagging similarities or differences, but professional standards require a qualified examiner to render the final opinion.
Question 2: A CHA is asked to analyze a handwriting sample submitted as a JPEG photograph taken with a smartphone. What is the primary limitation of this submission?
- JPEG format cannot be opened by forensic software
- Camera lens distortion and lossy compression may alter proportions and fine stroke details (Correct answer)
- Smartphones cannot capture sufficient color depth for ink analysis
- The metadata will automatically identify the writer's identity
Correct answer: Camera lens distortion and lossy compression may alter proportions and fine stroke details
JPEG compression is lossy and camera perspective can introduce distortion, both of which compromise the accuracy of measurements and comparisons.
Question 3: In the context of digital tools for handwriting analysis, what is 'feature extraction'?
- Physically cutting out sections of a questioned document for lab testing
- The automated identification and measurement of specific handwriting characteristics such as slant angle, loop size, and stroke width (Correct answer)
- Recovering deleted text from electronic documents
- Extracting DNA from pen ink to identify the writer
Correct answer: The automated identification and measurement of specific handwriting characteristics such as slant angle, loop size, and stroke width
Feature extraction uses algorithms to quantify measurable handwriting attributes, enabling statistical comparison between known and questioned samples.
Question 4: Which technology is most associated with detecting erasures or chemical alterations on a physical document?
- Magnetic ink character recognition (MICR)
- Infrared luminescence examination using a VSC or forensic light source (Correct answer)
- Optical character recognition (OCR)
- 3D printing reconstruction
Correct answer: Infrared luminescence examination using a VSC or forensic light source
Infrared luminescence can reveal chemical erasures, overwriting, and ink differences that are invisible under normal white light.
Question 5: A CHA using spectrographic analysis of ink can determine all of the following EXCEPT:
- Whether two entries were written with the same pen
- The approximate date a specific ink formula was commercially introduced
- The identity of the specific individual who held the pen (Correct answer)
- Whether ink was added to a document at a different time than surrounding text
Correct answer: The identity of the specific individual who held the pen
Ink analysis reveals chemical composition and comparative information about the ink itself, but cannot identify who physically held the pen.
Question 6: What is the primary purpose of using a 'template' or 'exemplar grid' in digital handwriting comparison software?
- To automatically generate a handwriting report without examiner input
- To provide a standardized reference overlay that allows consistent measurement of letter proportions and spatial relationships (Correct answer)
- To convert cursive writing into printed text for database searching
- To encrypt the examined document for chain-of-custody purposes
Correct answer: To provide a standardized reference overlay that allows consistent measurement of letter proportions and spatial relationships
An exemplar grid standardizes measurement so that letter height ratios, spacing, and baseline deviations can be consistently quantified across samples.
Question 7: When a handwriting examiner encounters a digital signature on an electronic document, the appropriate tool for authentication is most likely:
- A graphology analysis of the signature's aesthetic qualities
- Public key infrastructure (PKI) cryptographic verification software (Correct answer)
- A flatbed scanner to compare it with physical exemplars
- ESDA to detect underlying pressure patterns
Correct answer: Public key infrastructure (PKI) cryptographic verification software
Digital signatures are authenticated through PKI cryptography, which verifies the mathematical signature rather than its visual appearance.
CHA Technology & Digital Tools 3
Which of the following best describes the role of Automated Handwriting Analysis (AHA) software in a CHA's workflow?