David S. Moore offers a full range of services as a certified forensic document examiner. With today's changing technologies, experience, proven skills and state-of-the-art equipment is more crucial than ever in determining the authenticity of a document or a signature - or to resolve other difficult document problems. Forged Signatures on Wills, Deeds, and other Important Documents Handwriting and Handprinting Identification Alterations and Obliterations in Medical and Other Business Records Typewriting Comparison and Typewriter Identification Business Machine Identifications and their Products Paper Products Comparison and Ink Analysis Age/Date Determination Office Machine Copies Printed Matter and Printing Techniques Document Photography and Special Photographic Techniques Courtroom Testimony and Visual Aids Presentation of formal or informal classes to interested groups. A stereoscopic binocular microscope and hand magnifiers to view documents under proper magnification. An Electrostatic Detection Apparatus (ESDA) to detect and visualize indentations on paper. A Video Spectral Comparator (VSC) to detect differences in inks with ultraviolet and infrared irradiation. Test grids to detect alterations to typewritten documents. A variety of cameras with special filters and films.