The Samsung OLED that reads fingerprints and blood pressure. An OLED display that not only does what a normal display does but also recognizes fingerprints and measures parameters such as the user’s heart rate, blood pressure and stress levels.
Samsung launches the novelty with its new range of screens presented today of which this screen is certainly the main innovation. They met at SID Display Week 2023 in Los Angeles introducing a fundamental innovation
Fingerprint readers in smartphones typically work thanks to a small camera placed under the screen which in turn uses light to illuminate the finger, or they use ultrasound instead of optical systems
Samsung’s new “Sensor OLED Display” extends the readability to the entire display, integrating the organic photodiode (OPD) into the panel itself.
Another possibility could be to allow the launch of an app by opening it only with a specific finger, without requiring further authentication mechanisms (codes or facial recognition).
A screen of this type is certainly of interest to smartphone manufacturers who will be able to exploit it to integrate recognition with multiple fingers (e.g. unlocking the phone only by recognizing multiple fingerprints at the same time), with obvious benefits in terms of security.
The other functions mentioned above for cardiovascular health are obviously also very interesting, with blood pressure (the pressure exerted by the blood, pumped by the heart, on the wall of the arteries that distribute the blood itself in the body) measurable using two fingers.
“To accurately measure a person’s blood pressure,” the South Korean company explains in a statement, “it is necessary to measure the blood pressure of both arms.” And again: “The Sensor OLED display is able to simultaneously perceive the fingers of both hands, providing information related to health more accurately than existing wearable devices”.
Samsung reports that the system in question works by taking advantage of the different way in which light is reflected with OLEDs, taking into account the contraction and relaxation of blood vessels in the fingers, elements that can be converted into a blood pressure reading.