Terrorists build Wi-Fi bombs to dodge cops’ cellphone jammers

The explosives were discovered in a raid earlier this month, and included a switching mechanism that enabled them to be detonated using a signal sent via Wi-Fi if the main trigger, which uses a SIM card and waits for a mobile phone message to detonate, was blocked by radio-frequency jammers. While Indonesian police now routinely used signal jammers at large public gatherings, thanks to a spate of bombs in recent years, they only disrupt cellphone communications, leaving wireless networking frequencies untouched. Dedi also complained it’s more difficult to jam Wi-Fi signals than cellular, making these Wi-Fi-activated bombs most undesirable, though the spokesman did not go into more detail.

Source: www.theregister.co.uk