Some alarm devices come with a built-in visual deterrent called "foiling," which surrounds windows and doors with quarter-inch foil tape containing wire circuitry.

Many methods to protect the data and to prevent theft have been developed, including alarms, laptop locks, and visual deterrents such as stickers or labels.

The visual deterrent of police officers at the old location, on East Fifth Street near First Avenue, has been sorely missed.

The cages provide a visual and tactile deterrent to sharks.

They were pivotal to the project because they, like the patrolmen, would be a visual deterrent.

The Angels have become famous for their citizen's arrests, but traveling in packs, as they do, has proved equally effective as a visual deterrent to potential criminals.

Oh, the frustrations of being a living visual deterrent.

There are, however, two good reasons for fitting a visual deterrent:

The dog, Kato, a German shepherd, provides at least what Mr. Long calls "a visual and audial deterrent."

Methods of bird control include physical deterrents, visual deterrents, sonic devices, trained birds of prey (falconry), chemicals, contraceptives and active barriers, among others.