Re:We can use this ourselves (Score 1)

I wonder how good the size tolerance needs to be? Exactly 1mm when scanned, we think?

I don't think size tolerance can be too important, though relative positioning of the circles will be. People have reported that they can't load certain images which contain part of a dollar bill into photoshop. If the image was scanned outside of photoshop then it can't know the DPI used for scanning (or printing, if done outside of photoshop).

I haven't found any software which I have which contains the anti-counterfeiting code. From a scanned and enlarged image I calculated the coordinates and came up with a PS file which looks to have the right pattern when compared with 10 pound and 10 Euro notes. Anyone want to check for me?

%!PS-Adobe-3.0
%%Pages: 0
%%BoundingBox: 60 30 100 70
%%EndComments

%%EndProlog
.4 setlinewidth

newpath 76.059952 59.850120 1.083513 0 360 arc closepath stroke
newpath 88.536771 57.223421 1.083513 0 360 arc closepath stroke
newpath 80.000000 50.000000 1.083513 0 360 arc closepath stroke
newpath 73.433253 47.701639 1.083513 0 360 arc closepath stroke
newpath 81.313349 43.301918 1.083513 0 360 arc closepath stroke

showpage
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