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Uniqueness is inherent in the very process of Holographic
Recording. If the same holographer but at two different
point of time or if two different holographers but at the
same point of time, were to carry out holographic recording
from “ the positive” of each layer, minute examination will
reveal subtle differences between the two versions of the
same hologram created by them. Thus it is impossible to make
an exact replica of the hologram and therefore it is
regarded as virtually impossible to replicate.
A Hologram is the “Interference Pattern” on the
photosensitive coating on the surface of the glass plate
created by the interaction of two beams of coherent light
from a laser. Each time a holographic recording is
undertaken, there will be subtle variations in the above
referred “Interference Pattern”, making such pattern unique.
Thus, uniqueness is inherent in the very process of
holographic recording. It is not possible to make an exact
replica of a hologram and hence it is regarded as virtually
impossible to replicate.
A special chemical coating known as Temper-Evident Coating
on the Base Polyester Film imparts an additional security
feature to the hologram, to detect any attempt at its
unauthorized removal from the surface of a product or of its
packaging or of a document.
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