> > Allegedly, map printers (cartographers) have
errors in their
> > street maps to help identify blatant copies. I guess they figure
On Fri,
30 Jun 2006, Stan Barr wrote:
The British Ordnance survey and "A to Z"
street maps certainly do this.
I found one of their deliberate errors in the latest edition of our
local area map.
Although the OS at one time explicitly denied it, about 5 years ago, they
used it to bust the British Automobile Association! (20 million pound out
of court settlement, London Times 3/6/01)
OS said the changes were not errors but "subtle and secret ways of
detecting plagiarizing, rather like watermarks".
NOTE: all errors in a MICROSOFT OS are NOT Mountweazels nor pseudata;
they are REAL errors.