How Is Biometric Technology in Smartphones Advancing Beyond Fingerprints and Facial Recognition?

January 30, 2024

The biometrics landscape is evolving at an astonishing pace. With the advent of smartphones, biometric technology has become increasingly pervasive, offering a secure and convenient method of identity verification. While we’ve grown accustomed to these advancements in the form of fingerprint scans and facial recognition, the future of biometrics is teeming with potentials far more captivating. Let’s delve into the futuristic world of biometrics and decode what lies beyond fingerprints and facial recognition.

The Advent of Palm Vein Recognition in Smartphones

Palm vein recognition uses infrared light to scan the vein pattern in an individual’s palm – a characteristic as unique as fingerprints. It’s a newer technology that is not yet widely used but is seen by many as a logical progression in the biometrics field.

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Palm vein recognition is a contactless technology, thus reducing the risk of spreading germs or viruses, a concern that became much more significant after the COVID-19 pandemic. This technology also holds the advantage of being extremely difficult to fake because the veins are inside the body and their pattern cannot be easily duplicated.

One significant development in this field is the introduction of Fujitsu’s Contactless Palm Vein Authentication technology, which is said to have an extremely low false acceptance rate and can even differentiate between identical twins. This technology has been embedded into smartphones, promising a safer and more secure user experience.

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The Rise of Voice Biometric Technology

Voice recognition technology has been around for a while, with applications ranging from customer service to smart home integration. Recently, it has started to gain traction as a biometric technology in smartphones.

Voice biometrics analyze hundreds of voice characteristics from an individual’s speech pattern, such as pitch, tone, accent, and speed. These elements are as unique as fingerprints and can be used to accurately verify a user’s identity.

Several smartphone manufacturers and software providers are now incorporating voice biometric authentication into their devices. For instance, Nuance Communication’s voice biometric technology is being used by numerous banking institutions to provide secure and easy-to-use mobile banking services. Similarly, Google’s Voice Access, a voice control system, enables users to navigate through their smartphone using voice commands, which includes unlocking the phone.

The Application of Iris Recognition in Smartphones

Iris recognition is another innovative biometric technology that’s becoming prevalent in smartphones. This technology involves capturing a detailed image of the iris – the coloured ring around the pupil – which is unique for every individual.

In 2017, Samsung became the first smartphone manufacturer to introduce iris scanning as a biometric feature in its flagship Galaxy S8. Since then, the technology has rapidly evolved and is now considered one of the most secure biometric authentication methods.

The iris recognition system is not affected by outside changes such as glasses or contact lenses, making it a reliable and robust form of biometric authentication. This feature’s resilience in different conditions has allowed the technology to be increasingly implemented in newer smartphone models.

The Integration of Heartbeat Biometrics in Smartphones

The next frontier of biometric technology in smartphones could be based on the rhythm of our hearts. Heartbeat biometrics, also known as electrocardiogram (ECG) biometrics, use the electrical activity of the heart to identify an individual.

Mobile ECG technology is already being used in health and fitness applications to monitor heart rate and detect anomalies. However, companies like B-Secur are taking it a step further by using ECG signals for biometric authentication. Their technology, HeartKey, is designed to be integrated into any device with a touch surface, including smartphones.

Heartbeat biometrics offers several advantages over traditional methods. Besides its uniqueness and difficulty to forge, it also provides continuous authentication. This means that the phone can continuously monitor the user’s heartbeat pattern, ensuring that the phone is always in the hands of the authorized user.

Implementing Gait Recognition in Smartphones

Gait recognition is a biometric technology that identifies people based on the way they walk. This is determined by various factors such as body shape, limb length, and walking speed.

The potential of gait recognition is immense, especially in the realm of smartphones. By using built-in sensors, smartphones could analyze a person’s gait for authentication purposes. This technology could provide a continuous and seamless method of identity verification.

Several researchers and companies are exploring the potential of gait recognition. For instance, the AI team at CSIRO’s Data61 has developed a proof-of-concept app that uses a smartphone’s accelerometer and gyroscope to authenticate a user’s walk. This technology’s potential application in smartphones could revolutionize the way we think about mobile security.

Clearly, the future of biometric technology extends far beyond fingerprints and facial recognition. As we venture further into this digital age, the rapid advancements in biometric technology could redefine the way we interact with our smartphones.

Advancements in Skin Texture Recognition

The science of biometrics is now exploring an exciting new frontier – skin texture recognition. This technology involves analyzing the unique patterns, lines, and spots on a person’s skin to verify their identity. Notably, these patterns are as unique as fingerprints, making skin texture an ideal biometric parameter.

Skin texture recognition holds great potential in the field of smartphone security. Given that the skin covers our body, this method of biometric authentication wouldn’t require any special action from the user, like placing a finger on a scanner or looking into a camera.

This technology leverages advanced algorithms and high-resolution imaging to map the skin’s texture accurately. An example of this progress is seen in Toshiba’s skin texture recognition technology. It utilizes the skin’s pattern alongside other biometrics like fingerprint and facial recognition to bolster the authentication process.

However, the practical implementation of skin texture recognition has its challenges. Achieving high-quality skin images can be difficult due to various factors such as lighting conditions, skin conditions, and aging. Despite these obstacles, the potential advantages of skin texture recognition make it a promising field of study in biometric technology.

The Emergence of Behavioral Biometrics

New advancements in biometrics are not just limited to physical attributes. Technologists are now delving into the realm of behavioral biometrics, which involves identifying individuals based on their unique behavioral patterns. This includes parameters like typing rhythm, app usage habits, and even the way a person holds their phone.

The application of behavioral biometrics in smartphones is gaining momentum, with several tech companies exploring this area. For instance, Behaviosec, a leading behavioral biometrics firm, provides technology that enables continuous authentication by monitoring the way a user interacts with a device.

What makes behavioral biometrics an appealing technology is the fact that it’s passive and continuous. The user doesn’t have to perform any specific action for verification, and the monitoring is ongoing for as long as the user interacts with the device. This provides an additional layer of security, making it harder for unauthorized users to gain access.

However, privacy concerns arise with behavioral biometrics, as it might seem intrusive for some users. Therefore, companies implementing this technology need to ensure transparency about what data is collected and how it’s used.


Biometric technology in smartphones is advancing at an extraordinary pace, pushing the boundaries of what we thought possible. Beyond fingerprints and facial recognition, we’re witnessing the rise of exciting and innovative technologies like palm vein, voice, iris, heartbeat, gait recognition, skin texture, and behavioral biometrics. These advancements promise a future where our smartphones become even more personalized and secure.

Yet, as we embrace these new technologies, it’s crucial to navigate the potential challenges they present, including privacy concerns and the need for robust data protection measures. As we look to the future, the ultimate goal remains the same – to provide a seamless, secure, and user-friendly experience that respects individual privacy. The road ahead for biometrics is indeed promising and full of potential.