The GPS is very consistent, except in examples that I've already cited—urban canyons and things like that.
Poor cellular coverage is just a fact of life in our business. We see it all the time in every country we operate in. But the operation of the cellular device and the operation of the GPS device are completely separate. If we're not able to communicate, we still continue to record a GPS point as normal and inform the offender of any violations as normal. We can store up to 30 days of points on this device, and whenever the device is able to communicate, it downloads all of that data and picks up any updates.
We also have the ability to equip—it's becoming less and less common—a unit in the house that has a regular, wired phone connection.