title: The Decipherment of Latent White Board Entries.
abstract: This case involves an incriminating message written on a white board and erased before the investigators seized the evidence. Investigators inquired about the possibility of recovering the entries and subsequently submitted the board to the Documents and Digital Evidence Branch for examination. In an attempt to recover latent handwritten entries, examinations were conducted utilizing the Foster and Freeman Video Spectral Comparator 6000/Hyper Spectral (VSC 6000/HS). Latent handwritten entries were observed with the use of an excitation band-pass filter in the range of 485 nm-610 nm with a longpass barrier filter at 645 nm in front of the camera lens of the VSC 6000/HS. Entries were also recovered and imaged using an alternate light source with the Phase One (P65) imaging system. Multiple latent handwritten entries were recovered utilizing various instruments and lighting techniques. This report discusses the details concerning the examination and the results.
authors.affiliation: United States Army Criminal Investigation Laboratory, 4930 North 31st Street, Forest Park, GA, 30297.
authors.forename: Wendy
authors.initials: W
authors.lastname: Toulomelis
keywords: erasures; filter; forensic documents; forensic science; handwriting; infrared fluorescence; white board