We're already used to unlocking a phone by simply placing it in front of our face and accessing certain apps using fingerprint technology. Behind these advances is biometrics, identification technology based on recognising each person's unique physical characteristics: their fingerprint, their face and their voice. Voice is already the gateway to many services and applications that have become an integral part of our daily lives. The level of intuitiveness and user-friendliness enabled by voice-based interfaces place them heads and shoulders above other options when it comes to interacting in a seamless way with our devices. From a biometrics standpoint, voice offers additional benefits.