Breaking NEWz you can UzE...
compiled by Jon Stimac
Fingerprinting Cost May Deter Volunteers
FLINT JOURNAL, MI
- Oct 13, 2006
...background checks now ask volunteers to pay to have
their fingerprints run through an electronic database...
Trial Focuses on Fingerprints
DAILY NEWS, MA - Oct 11, 2006 ...defense focuses on several
prints found on the inside of a storm door that did not match anyone
connected to the case...
US Expert Pulls Surprise
NEWS24, So AFRICA
- Oct 10, 2006
...an international fingerprint expert thinks a fingerprint "has been
Fingerprint Led to Arrest of Slaying Suspect
- Oct 10, 2006 ...an alert firefighter helped police
quickly put together some odd clues to make an arrest...
Recent CLPEX Posting Activity
containing new posts
Moderated by Steve Everist
McKie controversy still alive
nigeus lowlef Mon Oct 16, 2006 3:06 am
Ethics outside the office
Whisler Sun Oct 15, 2006 8:55 pm
Heat/Humidity Chamber Recommendations?
Mark Fri Oct 13, 2006 1:18 pm
"Naked Science: Forensics Under Fire"
Ducky Tue Oct 10, 2006 5:18 pm
Red Tue Oct 10, 2006 4:53 pm
UPDATES ON CLPEX.com
Updated the Detail Archives
we looked at some feedback on Steve Scarborough's article,
we take a look at the approved SWGFAST QA document.
SWGFAST Quality Assurance Guidelines for Latent Print Examiners
Fri, Oct 13, 2006 from the approved SWGFAST document.
SWGFAST recognizes the importance and significance of establishing Quality
Assurance protocols and procedures for friction ridge examination.
1 Fundamental Requirements of Quality Assurance are:
1.1 Training to competency before beginning independent casework
1.2 Establishment and maintenance of quality assurance documents
1.3 Procedures for the documentation of evidence handling and examination
1.4 Procedures for verification process and resolution of conflicting
1.5 Procedures for proficiency testing, case review, and testimony review
1.6 Procedures for corrective actions
1.7 Provision for professional development and continuing education
2 Quality Assurance Documents
2.1 Written procedures shall be maintained by the agency.
2.1.1 Revisions shall be clearly documented and appropriately authorized.
2.2 The following topic areas shall be included within quality assurance
2.2.1 Evidence handling procedures
2.2.2 Laboratory safety procedures
2.2.3 Material safety data sheets
2.2.4 Methods and procedures for reagent preparation, testing, storage, and
2.2.5 Methods and procedures for friction ridge impression development,
image capture, and storage
2.2.6 Methods and procedures for friction ridge examination, including
documentation and report writing
2.2.7 Methods and procedures for verification
2.2.8 Resolution of conflicting conclusions
2.2.9 Technical and administrative case review
2.2.10 Proficiency testing
2.2.11 Training and competency records
2.2.12 Equipment calibration and maintenance logs
2.2.13 Method validation records
2.2.14 Electronic fingerprint systems
2.2.15 Testimony review
2.2.16 Corrective action
3 Procedures for the documentation of evidence handling and examination
3.1 Written procedures shall be maintained by the agency.
3.2 Evidence handling procedures
Evidence shall be collected, received, and stored to preserve the identity,
integrity, condition, and security of the item.
3.2.1 A clear, well-documented chain of custody shall be maintained from the
time that the evidence is collected or received until it is released.
3.2.2 Each agency shall prepare a written policy to ensure that evidence
will be handled, processed, and preserved to protect against loss,
contamination, or deterioration.
3.2.3 At the time of collection, latent print lifts, photographs/images
shall be marked with unique case identifier and personal markings. When
relevant, the information about the orientation and/or position of the
latent print on the substrate through description and/or diagram(s) should
also be included.
At the time of examination, the latent print lifts, the photographs/images,
or the case notes shall also include the following:
188.8.131.52 Unique case identifier
184.108.40.206 Date and initials or date and personal marking
220.127.116.11 Impression source (origin of the lift or photograph)
18.104.22.168 Information to establish the scale
If needed to perform a complete and proper ACE-V, it may be necessary to
acquire additional information such as substrate, orientation/position of
the impression, diagram(s), processing technique(s) used, and so forth.
3.3 Examination Documentation and Report Writing
Procedures shall be in place to ensure the case documentation is accurate
and complete. These procedures are not intended to address evidence
retention policies and procedures.
3.3.1 Examination documentation shall allow a competent examiner to evaluate
what was done and to interpret the data, and shall include:
22.214.171.124 All examination activities
126.96.36.199 Latent print lifts, photographs/digital images, or legible copies of
the latent prints of value.
188.8.131.52 Known exemplars, Photographs/digital images or copies suitable for
comparison of the known exemplars when an individualization has occurred.
184.108.40.206 Annotations on original evidence, photographs/digital images, or
copies that correlate to written notes
3.3.2 Report Writing
Reports shall contain the following:
220.127.116.11 Case identifier
18.104.22.168 Identity of examiner
22.214.171.124 Date of report
126.96.36.199 Item identifier and description of evidence
188.8.131.52 Statement of evidence examined
184.108.40.206 Results of latent print examination
4 Verification process and resolution of conflicting conclusions.
4.1 Written procedures shall be maintained by the agency.
Full definitions of the following terms are in the SWGFAST Glossary and
Friction Ridge Examination Methodology for Latent Print Examiners documents.
Only the key elements of the examination protocol and associated conclusions
Analysis includes the methodical assessment of a friction ridge impression
to determine suitability for comparison.
Comparison is the observation of friction ridge impressions for similarities
or differences and includes a determination of the sequence and spatial
relationship of friction ridge details.
Evaluation is the formulation of a conclusion based upon analysis and
comparison of friction ridge impressions. From the evaluation stage, the
following conclusions can be drawn:
Individualization is the result of the comparison of two friction ridge
impressions containing sufficient quality and quantity of friction ridge
detail that is in agreement.
Individualization occurs when a latent print examiner, trained to
competency, determines that two friction ridge impressions originated from
the same source, to the exclusion of all others.
Exclusion is the result of the comparison of two friction ridge impressions
containing sufficient quality and quantity of friction ridge detail that is
not in agreement.
Exclusion occurs when a latent print examiner, trained to competency,
determines that two friction ridge impressions originated from different
Inconclusive is the result when a latent print examiner, trained to
competency, is unable to individualize or exclude the source of an
Inconclusive results shall not be construed as a statement of probability.
Incomplete or unclear friction ridge impressions may result in the inability
to reach either an individualization or exclusion decision.
Verification is the confirmation of an examiner’s conclusion by another
Blind verification is the confirmation of an examiner’s conclusion by
another competent examiner who has no expectation or knowledge of the prior
4.2.5 Conflicting Conclusions
Failure of the verification process to result in confirmation of a prior
conclusion constitutes a conflicting conclusion.
Three types of conflict can occur: 1) individualization versus exclusion, 2)
individualization versus inconclusive, or 3) exclusion versus inconclusive.
4.3 Verification process
4.3.1 All individualizations shall be verified prior to being reported.
4.3.2 Exclusion or inconclusive results may be verified.
4.3.3 Agencies are encouraged to develop procedures for blind verification.
These procedures may be applied to cases where there has been a single
conclusion (individualization, exclusion, or inconclusive) to an individual
or a complex latent print comparison. Blind verification may also be
implemented through random case selection.
4.4 Resolution of conflicting conclusions
When examiners have conflicting conclusions, a quality review shall be
conducted. It is the responsibility of the agency to determine whether
corrective action is appropriate.
4.4.1 Conflicting conclusions
220.127.116.11 Individualization versus exclusion
If the quality review reveals that “exclusion” is the conclusion to be
reported, then an erroneous individualization has been made. This is a
serious error requiring corrective action as deemed appropriate.
If the quality review reveals that “individualization” is the conclusion to
be reported, then an erroneous exclusion has been made. Corrective action is
required as deemed appropriate.
18.104.22.168 Inconclusive versus individualization / exclusion
If the quality review reveals that either “individualization” or “exclusion”
is the conclusion to be reported, then a failure to individualize or exclude
has occurred. Corrective action may be required as deemed appropriate.
If the quality review reveals that “inconclusive” is the conclusion to be
reported, then the determination of individualization or exclusion is
inappropriate. Corrective action may be required as deemed appropriate.
22.214.171.124 Verification of an erroneous conclusion is equal to having effected
the original erroneous conclusion.
4.4.2 A quality review shall be documented and include:
126.96.36.199 A review of case documentation.
188.8.131.52 Re-examination of the friction ridge impressions by the original
examiners, independent internal examiner(s), or independent external
184.108.40.206 Determination of the conclusion to be reported.
220.127.116.11 Determination of the root cause(s) for the conflicting conclusions
(individual or systemic) which may include:
• A review of training records of the examiner(s).
• A review of the training program.
• A review of prior work performance.
18.104.22.168 Determination of the seriousness of the conflicting conclusions.
22.214.171.124 Determination of corrective action if deemed appropriate.
5 Proficiency Tests, Case Review, and Testimony Review
5.1 Written procedures shall be maintained by the agency.
5.2 A proficiency test shall be completed by each latent print examiner
5.2.1 Proficiency tests may be purchased externally, developed in-house, or
obtained from another agency.
5.2.2 The policies, procedures, and criteria for any corrective action taken
as a result of a discrepancy shall be documented in writing.
5.2.3 At a minimum, proficiency test records should be consistent with the
SWGFAST Guidelines for Latent Print Proficiency Testing Programs.
5.3 Technical Case Review
Technical Reviews determine the quality of casework and ensure reliable
results. These reviews concentrate on whether the appropriate tests and
examinations have been performed and to support the results and conclusions
reported, and whether sufficient supporting documentation is present. They
also focus on whether the conclusions are consistent with the documentation
and are within accepted practices.
5.3.1 Technical case reviews shall be conducted on a regular basis as
defined in department policies and procedures.
5.3.2 A technical review will determine if:
• The appropriate examinations have been performed.
• The conclusions are consistent with the documented data and are within
• There is sufficient supporting documentation.
• Verifications have been completed and properly documented.
• The reported results are clear, concise, accurate, and complete.
5.3.3 A technical review by a competent latent print examiner may include a
physical examination of the evidence or re-examination of all latent print
5.3.4 Technical reviews should be conducted by another competent latent
5.3.5 The specific policies, procedures, and criteria for any corrective
action taken as a result of a discrepancy in a technical case review should
be clearly documented in writing.
5.4 Administrative Review
Administrative reviews determine the clerical accuracy of reports and case
5.4.1 Administrative reviews shall be conducted on all cases.
5.4.2 Administrative reviews shall be conducted by a supervisor or designee.
5.5 Testimony Review
Testimony review evaluates the performance of the examiner.
5.5.1 Testimony reviews should be conducted at least annually
5.5.2 Testimony reviews shall be conducted for each examiner
5.5.3 Testimony reviews may consist of any of the following:
126.96.36.199 Testimony Evaluation Survey Form
188.8.131.52 Verbal (or written) communication with court officials
184.108.40.206 Review of written transcript, video, or audio recording of testimony
220.127.116.11 Personal observation of testimony
5.5.4 If testimony is not given during the year, then that fact shall be
6 Corrective Actions
The agency is responsible for writing and enforcing policy to handle errors.
When preparing written policy governing errors, a variety of corrective
actions should be included. The corrective actions should be appropriate to
the level of error, the skill level of the examiner, and the circumstances.
6.1 Corrective action shall be documented and include at least one of the
6.1.1 Immediate removal from latent print casework
6.1.2 A review of prior casework
6.1.3 Correction of training program deficiencies
6.1.4 Remedial training and competency testing
6.1.6 A review of subsequent casework for a period of time
Any action beyond corrective action is outside the scope of SWGFAST.
SWGFAST does not construe corrective action to be disciplinary in nature.
Disciplinary action is an agency-specific responsibility, and should be
outlined in the written policies of the agency.
7 Professional Development and Continuing Education
Professional development is important to broaden the examiner’s knowledge as
well as experience. It requires a commitment by both the examiner and the
agency. An agency should provide an opportunity for continuing education and
have written policies supporting professional development.
Examiner professional development may include discipline-specific activities
7.1 Receiving specialized training
7.2 Attending educational seminars
7.3 Reading professional publications
7.4 Conducting and publishing research
7.5 Completing self-study programs
7.6 Instructing specialized classes or seminars
7.7 Membership and participation in professional organizations
7.9 Continuing formal education
Feel free to pass The Detail along to other
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latent print examiners.
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