Posted 12/27/2008 4:18 pm
Well, it's similar to the color-shifting ink that it changes according to perspective, but this is different because it's a moving image that moves against the tilted direction.
It's apparently very hard to copy, since the strip itself is a piece of semi-hard plastic, and not really a thin embedded strip.
They say that each strip has over 650k micro lenses
http://blog.adamnash.com/2007/08/27...for-100-bob/
I'm no expert, but here's the link to its description from Crane.se
http://www.crane.se/site.aspx?id=572
Oh... and Crane is the official supplier for US banknote paper since the 1800s, but the technology was developed by its Swedish subsidiary.
It's apparently very hard to copy, since the strip itself is a piece of semi-hard plastic, and not really a thin embedded strip.
They say that each strip has over 650k micro lenses
http://blog.adamnash.com/2007/08/27...for-100-bob/
I'm no expert, but here's the link to its description from Crane.se
http://www.crane.se/site.aspx?id=572
Oh... and Crane is the official supplier for US banknote paper since the 1800s, but the technology was developed by its Swedish subsidiary.
