Heres a quote from the website:
I dont currently have a project in mind but I found these products very interesting!. They sell a few Evaluation Kits which I thought was cheap for the price of $10.The ProxSense® portfolio ranges from one to sixteen channel controllers for proximity and touch applications. Azoteq also offers self and projected capacitive touch screen controllers. The LightSense™ product family provides solutions for intelligent LED lighting control.
The Evaluation Kit which I purchased was the IQS127 Evaluation Kit 2
It contains a main evalution board with 3 modules which are preconfigured with different options, you just plug in the module you wish to use into the evalution board and use the board touch pad.
Some of the modules contain small leds to indicate a proximity or/and touch activation.
When a proximity or touch activation is detected then the module just outputs an high logic on either of its output pins, this could be used with a microcontroller, so it would be easy to add proximity and touch into your own project.