It's something we could look at. As we move through the evolution of our leases, we do add things. We've been adding the requirement to collect more information on greening results. We've added requirements to collect the volume of waste in buildings, so we may be able to look at that.
Again, it would be very dependent on what the technology is, how invasive it is and how we can ensure that they would safeguard the data to make sure that we're guarding the privacy of federal departments, as well as the federal employees who work in them.