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While fingerprints and facial scans rely on static snapshots, MultiKol argues that sound is the only biometric that behaves like a living marker.
By Shula Rosen
A “person” could sound like you, look like you and not be you and yet use your identity to benefit themselves and create serious problems for you.
That’s the essence of a deepfake, which is more than a nuisance, but can seriously compromise your identity, privacy and reputation.
Israeli startup MultiKol has positioned itself as one of the first lines of defense against deepfake fraud. The company’s executives describe a surge in scams driven by artificial intelligence that can mimic a person’s tone, speech patterns, and emotional inflections so convincingly that even trained professionals are being deceived.
MultiKol’s chief executive, Eddie Nevoani, says the company was founded after he saw colleagues in high-tech falling victim to voice-based fraud.
“Nowadays you can’t trust anything you hear or see because it might be fake,” he told Ynet, noting that early industry attempts at voice recognition did not earn the public’s confidence.
He recalled that even after new guidelines pushed companies toward biometric verification, the results fell short, leading him to conclude that the problem required a fundamentally different approach.
While fingerprints and facial scans rely on static snapshots, MultiKol argues that sound is the only biometric that behaves like a living marker.
Nevoani explained that voice gives security systems the ability to ask dynamic questions and confirm identity through responses that artificial intelligence cannot convincingly imitate.
By analyzing nearly 200 physical and acoustic signatures in a person’s speech, the system captures patterns linked directly to anatomy — the shape of the throat, the alignment of the jaw, the way air moves past teeth — details that remain consistent even if the user is sick, speaking a different language, or experiencing stress.
The company says it needs only a few seconds of audio to build this signature.
According to its founders, banks, defense agencies, and other security organizations around the world already use the tool to intercept deepfake attempts before a fraudster can gain access.
“We chose voice because it’s the only dynamic biometric,” Nevoani said. “If I’m unsure, I can ask again or request another phrase.”
Demand has risen sharply as criminals adapt to new technologies. More institutions recognize that older safeguards are no longer sufficient.
Recent warnings from global AI leaders have added urgency. Nevoani said MultiKol anticipated this shift years ago and developed a solution to the growing problem.
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