In spring 1991 the dongle protection scheme of EAGLE 2.0 had been cracked causing a decline of 30% in sales, while sales for a reduced demo version with a printed manual saw a significant increase.[3] As a consequence in 1992 CadSoft sent thousands of floppy disks containing a new demo of EAGLE 2.6 to potential users, in particular those who had ordered the former demo but had not subsequently bought the full product.[3] The new demo, however, also contained spy code scanning the user's hard disk for illegal copies of EAGLE.[3] If the program found traces of such, it would show a message indicating that the user was entitled to order a free printed manual using the displayed special order code, which, however, was actually a number encoding the evidence found on the user's machine.[3] Users sending in the filled out form would receive a reply from CadSoft's attorneys.[3][32] The act of spying, however, was illegal as well by German law.[3][32]
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