Lego Nxt Battery Back What Can I Use As A Wireless Webcam To Mount On My Lego Mindstorms NXT?

What Can I Use As A Wireless Webcam To Mount On My Lego Mindstorms NXT? - lego nxt battery back

I have the Lego Mindstorms NXT and I want to be a Spy-Bot. I need something that the video stream is displayed, and can be connected, if I-Spy Botting. It must therefore be powered by batteries, preferably rechargeable. And I have a Mac and therefore must have an IP camera, so you can find via a Web browser. I appreciate any help!