The big problem with receipts is that they can be used for selling votes.

That's a "big" problem?

Uh... I think it would be. Another problem is anonymity. The voter
will either take the paper home (where it appears eventually in his
trash) or he leaves it at the site (along with his fingerprints). A
sufficiently clever and motivated opponent (personal or otherwise) could
make use of this information.

In any case, the issue is whether or not the vote the voter =thinks= is
cast, is =actually= the vote that gets counted. This is independent of
paper receipts to the voter.

Jose
--
You can choose whom to befriend, but you cannot choose whom to love.
for Email, make the obvious change in the address.