Hello all,
In my master's thesis work I'm using a program that allows to control from pc a nokia device (iTALC, debian package recompiled for maemo diablo), and I'd like to have the possibility to disable local inputs when I remotely "grab" the control of it.

Is there a command that can I use in order to disable ONLY the local inputs (i.e. disable touchpad and keyboard) and be able to remotely work on it?

Currently the only thing that I'm able to do is locking the screen via the following command:
but in this way I also forbid the pc user to work on the device :-(

The main reason of my question is that the targeted users for the program in which I'm working will be children from 3 to 9 yo in a classroom environmet (so the teacher will be the one that from pc will control the device--i.e. support a child to solve a particular task)...and so I want to be sure that when the teacher is showing how to do something they will not messed up with keyboard and touchpad.

Some more informations:
- on the Nokias is running an x11vnc server and teacher uses a "custom" VNC viewer
- iTALC is based on Qt libraries: on each device is running a daemon and x11vnc is executed as a separate process into the daemon
- I can send remote commands to the devices

I hope my explanation will be clear enough.

TIA.

bye bye

How does vncviewer with view-only password work?
Is it the same to what you want to do?

echo 1 > /sys/devices/platform/i2c_omap.2/i2c-0/0-0045/disable_kp
echo 1 > /sys/devices/platform/omap2_mcspi.1/spi1.0/disable_ts

Oh, and for good measure:
The following will make the power key do nothing:
/etc/init.d/systemui stop
/etc/init.d/mce stop

@nhanquy:
I didn't get what you meant, but anyway what qwerty12 proposed worked fine and for me solved also another problem: disabling the lock button switch.

The only thing is that "systemui" is not recognized, but only mce is also ok for disabling the hw buttons.

bye bye