And no, it does not interfere with electronic fences that keep dogs from running next door.

There were complex alarms and boobytraps, not to mention an electronic fence.

When completed it will be a 400-mile long network of high walls, electronic fences, gates and trenches.

Some services allow owners to set an electronic fence around an address.

"Jeanne Rennalls said I should put up an electronic fence," she added.

Each side would stake out the entrances to electronic fences around the other's factories and storage sites.

In addition, an electronic fence may not be effective if an animal crosses a boundary while in a state of excitement.

From my living room window I could see the shimmer of the electronic fence marking the zone.

The perimeter was secured by electronic fences and patrols.

"After we set off every sensor in the place, not to mention being fried by the electronic fence."