International humanitarian law does not outlaw booby-traps altogether. However, given the grave risks booby-traps pose to the civilian population, IHL places stringent restrictions on their use. The ICRC, for instance, has concluded, correctly so, that the “use of booby-traps which are in any way attached to or associated with objects or persons entitled to special protection under international humanitarian law or with objects that are likely to attract civilians” is a violation of customary IHL (Customary IHL Study, rule 80).

Second, booby-traps may not take the “form of an apparently harmless portable object which is specifically designed and constructed to contain explosive material and to detonate when it is disturbed or approached” (art. 7(2)). The U.S. Department of Defense’s Law of War Manual provides the example of “booby-traps manufactured to resemble items, such as watches, personal audio players, cameras, toys, and the like.” It observes that the “prohibition is intended to prevent the production of large quantities of dangerous objects that can be scattered around and are likely to be attractive to civilians, especially children” (§ 6.12.4.8).

Third, booby-traps may not be attached or associated with the following specified objects (art. 7(1)). Including medical facilities, medical equipment, medical supplies or medical transportation;