Can multiple Leap motion devices be plugged in a single system?

Can multiple Leap motion devices be plugged in a single system?

Note:Only for leap motion users.
I have been using Leap Motion Device since two weeks now and the more I
use it,the more I want to know about it. I was wondering whether my laptop
can handle multiple leap devices.Is this possible.
This technology is still in its nascent stage and there is not much info
available on search engines.
My Questions:
can my laptop can handle multiple leap devices?
Are there any good documentation for development of leap applications?I
found it only on github
Any API's?
I am thinking about using this device not only keeping it on my desk,but
at various other positons.For example--Head so that i can view the
gestures on a projector.Is it possible with leap device or the range of it
is a matter of concern?
I thought of posting this question in stack exchange,but i think its worth
taking the risk.hope it does not get closed. Any Help?