> From: "Michael Van Wesenbeeck" <[EMAIL PROTECTED]>
> To: "LTSP" <[EMAIL PROTECTED]>
> Date: Fri, 12 Jul 2002 13:21:43 +0200
> Subject: [Ltsp-discuss] Point of Sale , accessing peripherals

> Could anyone give me some tips on accessing peripherals on the workstations?
> I would like to read an iButton (small memory device, www.ibutton.com,
> accessed via the serial port) in my point of sale app as some sort of credit
> card (members only).

I just visited their website, and I'm truly impressed. One day I will
get that system to computerize my home's door opener :-)

> I have worked with activeX in a windows environment to access the serial
> port of the server through a browser and also have the layout of my user
> interface change according to tcp or udp messages.  I have no idea as to how
> this is done using other languages or on other platforms (specificly linux -
> LTSP).  I do know of accessing tcp and udp ports with PHP.  tips anyone?

I don't really understand what you do. Describe more precise...

There seems to be something like a Java API for the iButton devices, with
Linux support announced. Try to get your apps run with that, with the
iButton reader device hanging at the server serial port (should be
easy, as well documented). Then get the reader device
moved to the workstation by having the WS running a modemserver (or so)
and map /dev/ttyX1 to the network exported modem device
- if you got that far, ask again.

Another solution attempt: If you have (as I understood) a Windows
computer (your "server") having the iButton, and windows-client
machines only (as active* is MSIE only, AFAIK!?), you can mount a
linux-exported serial port under windows too! That could cost you some
dozen bucks (I would have to look it up, don't even remember the
program's name for now), but it could work. But I don't see the point:
Why attach an iButton reader to a LTSP client when it cannot run the
software to access iButton? Or do you use vmware|Win4Lin|wine|...?

I wonder if the iButton manufacturers would like to support
ltsp-iButton project... Imagine an iButton
based internet cafe (LTSP workstations)- start costs would be (as I
understood their website) about 20 Euro for reader device per workstation, plus 3 Euro
per customer. Fair deal, isn't it?

Anselm



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