Tada! Eric Metois, Ph.D.

Eric Metois is Chief Science Advisor for Postea with 15 years experience as an R&D algorithm and software developer.

Prior to Postea Eric operated as a consultant / independent contractor over a period of 8 years. His expertise, creativity and analytical problem skills have been used in a wide variety of applications ranging from interactive music and video games to security technologies and computer vision. He has worked with a variety of clients from small startups to Warner Brothers Records

As Escher Group Ltd's Director of Strategic Research, Eric focused primarily on the theme of Intelligent Documents. He made several improvements to the company's FiberFingerprinting technology (a means to effectively fingerprint a substrate) and invented a novel, high-performance and versatile 2D symbology, branded as SpectraSeal, both of which being the objects of pending patents.

Prior to joining Escher, Eric had been part of the research and development team of Verance Corporation (formerly ARIS Technologies) since January 1997. There, he co-invented MusiCode, a transparent yet robust audio watermarking technology, which was subsequently selected as the worldwide industry standard for DVD Audio copy control and for Phase One of the Secure Digital Music Initiative (SDMI) in 1999. Since then, the technology has been integrated within a variety of consumer electronic devices. It is also at the basis of Confirmedia, Verance's comprehensive system for monitoring broadcast media.

Eric received his PhD under Prof. Tod Machover from the Massachusetts Institute of Technology's Media Lab in 1997. There, he played a major role in the design and development of several interactive installations and musical sound analysis algorithms. His PhD research, in collaboration with Prof. Neil Gershenfeld, led to "Cluster-Based Embedding Modeling", for which a patent was subsequently issued in 1999. His Ph.D. dissertation, "Musical Sound Information - Musical gestures and embedding synthesis", investigated means of applying these principles to the inference of dynamical sound synthesis algorithms from recorded waveforms, where the control set of the virtual instrument is perceptually meaningful.

Eric also holds a "Diplome d'ingnieur" from the "Ecole Nationale Suprieure des Tlcommunications" (ENST, Paris - France) where he studied Electrical Engineering with a major in Signal Processing. He has also been a visiting researcher at the University of Luminy's CRMC2 (Marseille - France), UC Berkeley's Center for New Music and Audio Technologies (CNMAT, Berkeley), and the "Centre d'Etude et de Recherche des Tlcommunications" (Toulon - France).


  • A. Rigopulos, E. Egozy, Eran, D. Schmidt, E. Metois, G. Lopiccolo - Method and apparatus for controlling a three-dimensional character in a three-dimensional gaming environment - Pending.
  • E. Metois, J.R. Smith, P.M. Yarin - Data encoding and workpiece authentication using halftone informations - Pending.
  • E. Metois - System and method for encoding and decoding data and position information using angular symbology and beacons - Pending.
  • J.R. Smith, E. Metois, M.J. Murphy - System and method for authentication and tracking of a workpiece that includes an optically active medium - Pending.
  • E. Metois, J.R. Smith - Data encoding and decoding using angular symbology - Pending.
  • J.R. Smith, P.M. Yarin, M.J. Murphy, A.V. Sutherland, E. Metois - Personal mail piece tracing and tracking mechanism - Pending.
  • E. Metois, R. Petrovic, K. Jemili - Method and apparatus for detecting processing stages applied to a signal - Issued May 16, 2006 (US 7,046,808).
  • R. Petrovic, K. Jemili, J.M. Winograd, E. Metois - Apparatus and method for embedding and extracting information in analog signals using distributed signal features - Issued January 16, 2001 (US 6,175,627).
  • J.M. Winograd, R. Petrovic, E. Metois, K. Jemili - Method and apparatus for preventing removal of embedded information in cover signals - Issued November 7, 2000 (US 6,145,081).
  • N. Gershenfeld, B. Schoner, E. Metois - Efficient Synthesis of Complex, Driven Systems - Issued December 14, 1999 (US 6,000,833).
  • R. Petrovic, J.M. Winograd, K. Jemili, E. Metois - Apparatus and method for encoding and decoding information in analog signals - Issued August 17, 1999 (US 5,940,135).
White papers and other miscellaneous writings