Voice Command Sprinklers

You take your dog out for a walk and as you pass a long forgotten section of your lawn you notice a brown spot.  Wouldn't it be nice to voice command your sprinklers to water that section of the lawn as you walked away?  Let me answer that: yes it would.  The sprinkler system would have to be set to a few key voices so the neighbor kids weren't over at your house wasting the irrigation water.