Touch sensitive led table

Sorry for the late reply, but thanks alot for your input, i'v decided to do light detection method, but im wondering is there any way to do proximity detection with an arduino? could I use the same mechanics as the company that made the octolively kit and use both infrared photo resistors and infrared leds to get proximity sensing?

Riva:

Im wondering two things:

  1. What do the infrared photoresistors do? as in how is it used?
  2. What does the infrared led do? and how is it used?

The infrared led & phototransistors are used to do proximity detection.

Im planning to have the photo-resistors take in the serial values, and when someone hovers there hand over the photo-resistor the led light turns on

Where does the serial data come from?

I just want something simple as leds turning on by either motion detecting or light detection.

Light detection = easy. Motion detection is harder as you either need PIR sensors or some other form of machine motion detection that may be beyond arduino's capabilities.

Also is there a way to build something similar to this using photo resistors and leds?

Have a look here Overview | Photocells | Adafruit Learning System

If there are other methods of building something similar to this I would really love to hear your opinions!

Might be worth looking at this http://www.thebox.myzen.co.uk/Workshop/LED_Sensing.html as you could use the LED as the light sensor.