gpg: cannot open /dev/tty: Permission denied

[Randy Harmon]

From: Werner Koch <wk@gnupg.org>
> Matthias Urlichs <smurf@noris.de> writes:
> 
> > "chmod 666 /dev/tty".
> > 
> > Some Linux boxes have broken permissions for that device file.
> 
> I assumed that he wants to use it in a CGI script or something like
> this and then it is not a good idea to write to the tty anyway.

I want to use it in both contexts.  Thanks to everyone for the 
responses.  

What exactly is it trying to write to the tty, anyway?

Randy