I did something similar on a past project. Maybe some variant will work
for you. In my case the user did not have access to the keyboard. I
purchased a simple motion detector. I placed the contact relay output
from it across the contacts for a key on the keyboard. When the user was
within range, or when they left, a key event would fire. You could do
something similar with some sort of input to a port.

FWIW,
Kraig 

     | -----Original Message-----
     | From: [EMAIL PROTECTED] 
     | [mailto:[EMAIL PROTECTED] On Behalf 
     | Of David Pyle
     | Sent: Wednesday, May 31, 2006 9:15 AM
     | To: [email protected]
     | Subject: <lingo-l> Slightly OT - Timeout on Web Kiosk
     | 
     | Folks
     | 
     | Apologies for the slightly OT nature of this query.
     | 
     | I've got to punch some Flash, Shockwave and existing web 
     | content through a web kiosk setup. It'll be frame-based 
     | with a master frame handling meta-navigation and the 
     | content items appearing in the sub-frames.
     | 
     | Some sub-frames will be local files and others off the 
     | internet called from a single corporate site. We can't 
     | add any code to the web content.
     | 
     | Does anyone know how you could implement a timeout 
     | client-side in the master frame so that when a user 
     | walks away from the kiosk it will return to a local "home" page.
     | 
     | Easy in Lingo if it was all director :-)
     | 
     | But sadly there's so much web content that it's gotta be 
     | delivered via a browser :-(
     | 
     | Thanks in advance.
     | 
     | 
     | --
     | Cheers
     | 
     | DAVO
     | 
     | 
     | 
     | David Pyle (mailto:[EMAIL PROTECTED])
     | 0407 047 900 (mob) 07 3004 7900 (wk) 07 3846 1220 (fax) 
     | snail to: PO Box 3015 Sth Brisbane QLD 4101 
     | http://www.toadshow.com.au
     | 
     | 
     |   The TV business is a cruel and shallow money trench,
     |   a long plastic hallway where thieves and pimps run free
     |   and good men die like dogs.
     |                                       - Hunter S 
     | Thompson [To remove yourself from this list, or to 
     | change to digest mode, go to 
     | http://www.penworks.com/lingo-l.cgi  To post messages to 
     | the list, email [email protected]  (Problems, email 
     | [EMAIL PROTECTED]). Lingo-L is for learning and 
     | helping with programming Lingo.  Thanks!]
     | 
     | 

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