Is there a cross platform barcode scanner application with an SDK available for mobile devices?

I would like to create a barcode scanning applciation for iPhone and Android. I have found for iPhone "Red Laser" http://www.redlaser.com/SDK.aspx.

I would like to know of any software people know about that has a shared license for both Android and iPhone devices.

Solution

Zebra Crossing (ZXing) has an Android barcode scanning library with an iPhone port that was "contributed and/or intermittently maintained".