All the hardware pieces that are used to build a PiGate are covered under the warrenty of their respective builders. PIGate.net assumes no responsibility for the safe and legal operation of the device.
The PiGate software is FREE under the agreements contained in the GNU copyleft file. See these links:
http://www.gnu.org/copyleft/gpl.html -- A complete description of your legal rights and responsibilities
http://www.fsf.org -- Free Software
http://www.opensource.org -- Open Source