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I've seen some kind of overlay thing you can get for CRT monitors to make them touchscreen(I saw this at a movie theater) and I was completely amazed. Well, I want to do this to my LCD monitor. Where can I get one of these devices? Multitouch is a plus, as is Linux support, though neither are absolutely required.

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I have no experience in this but the following article from eHow seems promising:

Using a touch screen with a computer allows you to do some things you wouldn't be able to do with just a mouse and keyboard. You can interact with the computer in a more natural way. You can also make sketches or take quick notes. Converting a liquid crystal display (LCD) to a touch screen can be done by installing one of many kits available. These kits contain a clear screen overlay to put over the monitor, a screen controller and universal serial bus (USB) or other cable type that plugs into your computer. The touch screen overlay is the same size of the computer monitor and is installed over the monitor in the monitor case. This is a fairly simple upgrade that most people can perform.

Things You'll Need:

  • LCD touch screen conversion kit
  • Microfiber cloth

The instructions are explained here: How to Convert an LCD to a Touch Screen

You can google for those touch add-on kits. I came across this, for example.

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A tad bit expensive sadly :( –  Earlz Dec 24 '10 at 10:14

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