ONLINE MUSEUM for OPTICAL CARDS' SYSTEMS

by Landis & Gyr

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Experimental Phonecards PDF Print E-mail
Monday, 08 June 2009 22:10
EX - "Experimental / Proof Phonecards" (to be developped)
Such cards for strict internal use of L&G engineers were not for sale but produced in order to :
* Improve the security of the optical system (country code, laser control numbers),
* Reduce the production costs (width reduction, PVC quality),
* Introduce new features required from Telcos (thermolack, notch, quadri-color, fullface, adverts).
Experimental-card with opto-kinegram in order to hide the optical structure

Last Updated on Sunday, 27 September 2009 18:05