Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: Is the desk stable on your lap even though it's not attached to a pillow?
Document: The touchpad is sensitive and responds very well (even better than my laptop touchpad in some cases! ).Though the rubber top of the desk works well to prevent slippage (important), it can collect dust easily, and it's not a very pleasant feeling when you touch it.
I would expect a long life span on these 4 AAA batteries.The lap desk seems to allow for good venting of this computer and also feels like a minor EM shield for my lap. I do not have measurements to back this up though, but I like having something between my computer and my lap to be an EM radiation filter. We probably do not need much here and this feels like enough for me.All in all, the lapdesk does fulfill its function perfectly.
But it serves a need that I have had for something like a graphics tablet and gives me a little more control for artistic purposes over the usual touch pad, mouse, or trackball (though I am getting better with a trackball, too, this touch pad is even better).The other buttons also seem to work on Linux, like the volume control ones and the "home" button to return back to the browser start page.
Ok. Trackpad doesn't work quite as good as a Mac trackpad works but it isn't bad as just a plain old lap desk either.
Works well as a lap desk for the laptop.But also works great if you are using an external keyboard and you prefer to have the keyboard on your lap for ergo reasons.Only thing missing is a middle click capability.
Logitech Touch Lap-desk n600 is a high-quality product, and its specifications have exceeded what the seller has claimed. Especially that I am able to use it with my Kindle E-book and both the 15 and 17.3-inch  laptops without being worried that they will slip off the lap-desk or will not be convenient for use on my lap.
I received this thing and was surprised at how big it is. I have a little 12" notebook and this thing is like a full desk on my lap with room for, say, a small pad of paper, or note book, to boot.This is great for those days I want to sit in the arm chair of an internet cafe with my laptop not getting my lap all hot and irradiated (?) so, for that alone I gave it three stars.
This portable lap desk provides a mobile surface for holding electronics as well as a pull out touch pad. I have used it primarily to have a hard surface on which to put a portable DVD player when I want to watch movies in bed. It is wonderful for that:  reasonable weight, easy to see when it should be dusted, and non-heat transferring. Since the touch pad on my current laptop is fine, I haven't needed the pull out feature.
Using a notebook (laptop) computer on your lap without the use of a flat surface is not a good idea. It can be uncomfortable, your legs can get hot (some have even claimed to have received burns on their legs), and what most people don't realize is that it can cause your laptop to overheat. Most notebook computers have an air intake on the bottom of the device.
This is a fairly efficient design, except if you sit the notebook computer on a soft or uneven surface, such as thick-pile carpeting, a fluffy sofa cushion, a bed comforter, or even your lap. It is important to have an air gap near that air inlet, to prevent obstruction of the air movement needed to cool the processor of your computer. This is why a lapdesk is so important.
Answer: It's stable.  It get's warm too, but not hot. It functions great, and your computer does not slide on it.  Highly recommend!