There're two kinds of hidden text or images available for holographic stickers. This two kinds of

hidden features improve the hologram stickers security feature very much agaist counterfeit.

One is laser readable hidden text(image). It's called E-beam hidden text too.The hidden text of image

justcan be seen with help oflaser pen(laser reader). Another one is Morse hidden text which use

decode film to see the hidden text.

Please visit hidden text hologram to see more detail

Hidden text hologgram type----holographic sticker samples  1 2 3

There is hidden text inside image. It's invisible to naked eyes.

Hidden text or image feature hologram is invisible to naked eyes in sunshine or normal lighting conditions.

Hidden text or image just can be seen with sepecial laser pointer (or called laser reader).