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Application of Hologram Technology

This is a question regarding the technology of the hologram. Can two overlaying images be applied to a card similar to a credit card? If so, can one be seen by the naked eye and the other only by the use of special glasses?

Thank you

Shelly Greene
Holmes Chemical Co - Hatboro, Pennsylvania, USA
2005

There are special Kinds of hologramms, called hidden, which can only be seen with special lightsources shining at them. These kind of hologramms can be overlaid by a "standard" hologramm, which can be seen using normal light.

Marcus Hahn
- Lucerne, Switzerland
2005

Thinking on holograms, can two or three beams of possibly different types of lights be projected to a point in space and where this beams of light converge create an image or a ball of light at that point?

Dwayne Fronterhouse
hobbyist - Guymon, Oklahoma
2006

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