The Laboratório de Exame de Documentos e Escrita Manual (LEDEM) is integrated in the Faculty of Sciences, and is dedicated, since 1986, to documents and handwriting forensic examination.
The mission of the LEDEM is the preparation of reports in the field of documents and handwriting examination, performed with independence, technical accuracy, diligence and celerity in order to contribute to the upholding of Portuguese justice.
Services provided
Within the scope of forensic examination which may be solicited to the LEDEM, we ensure the following types of tests:
- Veracity of signatures and texts;
- Authorship of signature and texts;
- Analysis of inks, erasures and other changes in documents, with application of non-destructive methods;
- Typewritten and printed writing examination, using non-destructive methods.
- Veracity and Authorship of Digitally Captured Signatures (DCS)
Work methodology
The forensic examinations performed by the LEDEM are collegial and follow the methodology used internationally in such examinations.
LEDEM is part of the
ENFHEX (European Network of Forensic Handwriting Experts), since 2013. One of the experts was elected for the Steering Committee in 2019.
LEDEM has available specialized equipment to conduct such examinations: stereoscopic microscopes, microscopes with polarization filters, equipment for Electrostatic Detection Apparatus (ESDA), video-spectral equipment (Projectina Docucenter Expert), photographic equipment and image processing programs coupled with forensic filters and several tablets to digitally capture signatures, as well as analysis software.
Either courts or private individuals may request forensic examination to the LEDEM.
Working Group
LEDEM has experts with specialized training in the area of Forensic Sciences that have undergone internships at major international laboratories of Forensic Science and participate actively in specialty Conferences, Workshops and Scientific Projects.
Request Expertise / Clarification
Documents and collection of samples instructions can be downloaded
here
For any clarification contact
ledem@fc.up.pt
Contacts
| Email |
ledem@fc.up.pt |
| Phone |
(+351) 220 402 826/766/764/813 |
| Fax |
(+351) 220 402 709 |
| Address |
Laboratório de Exame de Documentos e Escrita Manual
Faculdade de Ciências da Universidade do Porto
Rua Campo Alegre, nº 817 |
| Postal Code |
4169-007 |
| City |
Porto |
|
