Laser fence

[3] In fiction, laser fences may have the ability to stop intruders by blocking or injuring them.

[4][5][6][7][8] Lasers are used to keep birds from eating blueberries by being perceived as a predator.

[9] The European Commission is funding research into a laser fence to scare away rats and other pests.

[13] In the 1992 film Fortress, prisoners are kept secured by laser walls.

[4] In the 1995 film Congo, a laser fence is used as part of other high-tech equipment to defend a camp against vicious gorillas.