A San Francisco-based startup is making some serious claims about its yet-to-be-launched audio jamming device. Dubbed Deveillance, the company is said to have developed a portable table-top anti-surveillance device called Spectre I, which can stop nearby microphones from recording audio. The startup claims that it achieves this by using power-efficient omnidirectional…​A San Francisco-based startup is making some serious claims about its yet-to-be-launched audio jamming device. Dubbed Deveillance, the company is said to have developed a portable table-top anti-surveillance device called Spectre I, which can stop nearby microphones from recording audio. The startup claims that it achieves this by using power-efficient omnidirectional…  ​ ai