Home confinement officers use radar guns to establish whether someone is where they are supposed to be, Carpenter said. The ankle monitor gives off a signal that is picked up by the radar gun. The officer can drive by an establishment, a church for example, with the radar gun to determine if their charge is inside.
As part of the program Stewart has to stay drug- and alcohol-free and is subject to random drug testing and unannounced visits. This is done for all of the 220 people on Carpenter's watch, a number that fluctuates by the hour.
He said the average time spent on home confinement is about a year. Two years isn't uncommon, though three years is a long time.
"After a while we start to know them better than their family does," Carpenter said.
The six years Stewart will serve is out of the ordinary but not the longest he's ever seen. Carpenter said a man several years ago spent seven or eight years on home confinement.
About a dozen women accused or convicted of killing their husbands have been on home confinement since the program began nearly 20 years ago.
Only one man accused of killing his wife has been on confinement, he said, remembering Ricky Holley, who received the sentence in the late '90s. He was later found guilty of murdering his wife, Leigh, stuffing her in a toolbox and tossing it into the Kanawha River.
There also is a difference in monitoring. He said someone like Stewart, who keeps to herself and hasn't been a problem, would be on an RF ankle transmitter. The device is wirelessly connected to a box in her home.
The waterproof ankle monitor provides a small perimeter of freedom, meaning she can go outside, but she can't go much further. The perimeter can be adjusted - expanded or diminished - as the home confinement office sees fit. A person living in an apartment would have a smaller range to keep them from going to other apartments, for example, Carpenter said.
But there are also those who require further supervision. For those offenders, Carpenter and his officers use GPS tracking to keep an eye on them. The ankle transmitter is a little heavier, but it allows satellites to track and locate the person at any given moment in real time.
Carpenter also relies on the community, civilian and law enforcement to keep the offenders in line. He said their office receives tips all the time and that they investigate all of them.
"We have eyes and ears all over the valley," he said. "Last month we arrested three people after other people who had been on the program ratted them out.
"I've got six people here in my office but I've also got 105 (deputies) at the sheriff's department, and 180 (officers) at Charleston police and everyone else keeping an eye out."
Contact writer Ashley B. Craig at ashley.cr...@dailymail.com or 304-348-4850.