When a replayed voice is moved, the magnetic field changes and the phone can detect this.ĭon’t miss out on ET Prime stories! Get your daily dose of business updates on WhatsApp. Fully anonymous and undetected system built inside. The system requires that the phone be moving - swung in front of the mouth - when the voice recognition is being used. Use WeChat Hack tool to spy someones chat messages & photos logs, voice or video calls. It requires a phone user to be close to the phone when speaking to guarantee that anyone using a replay of a voice over a mechanical speaker is close enough that the magnetic field can be detected. In addition, the system uses the phone's trajectory mapping algorithm to measure the distance between the speaker and the phone. Ren's system uses the magnetometer in a phone, which is there for the phone's compass, to detect a magnetic field. Any replay must be broadcast on a speaker, and speakers have magnetic fields. A human can imitate your voice, but again, existing technology can detect this.Ī third method is replaying someone's actual voice, and here is where Ren's invention comes in. There is often no touch screen or keypad so voice authentication may be useful," Ren said.Īttacks can synthesise your voice, but these are detectable by existing algorithms. "With the Internet of things, what is a security interface? It is not like the phone. Voice recognition could become a more common security tool because more Internet-connected devices are being developed that do not have keypads. The best way to protect your cellphone, he said, is to use several security methods.
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