Need a timeout device SVR3.x

[Robert J. Diamond x7650]

We have a problem.  We need to time out inactive users on our 3b2's,
running SVR3.0, SVR3.1, SVR3.1.1, and SVR3.2.1  However, we cannot use
the usual mean of checking tty idle time because there are people that
sit in applications that do things like update an on-screen clock every
minute.

I need something that in essence will check for keystrokes as the basis
for the timeout.  I thought of using a streams driver, but I don't want
to re-invent the wheel.  Any ideas/solutions?

-- 
Robert Jon Diamond                         | attibr!rjd
AT&T                                       | rjd at attibr.att.com
International Operations Support           | attmail: rdiamond
1300 Mt. Kemble Avenue, Basking Ridge, NJ  | (201) 953-7650