The two factors that are important in rPPG measurement are lighting and stability. Our engineers created top of the line algorithms for stabilization and normalization to achieve the widest possible spectrum of conditions in which measurements can be taken. It is like a traditional device like BP-cuffs – there are specific instructions to provide a good measurement.

For optimal results with Shen.AI technology, follow these simple steps:

• Sit comfortably in well-lit surroundings (around 400 – 500 lx).
• Ensure your hardware meets Shen.AI’s requirements.
• Relax in a seated position for at least 5 minutes before starting your measurement to stabilize your circulatory and respiratory systems.
• During measurement, maintain normal breathing and keep your head steady. Avoid talking or making facial expressions.
• Position your face correctly in front of the camera to fit within the screen frame
• When ready, simply press the START button.

Don’t rush the 5-minute relaxation; it’s key to accuracy. For more in-depth guidance, download our comprehensive guide on using Shen.AI. 

Blood pressure is never constant and can fluctuate significantly over short intervals. Shen.AI measures blood pressure continuously for 60 seconds, yielding an average value. Factors like movement, speech, and cuff-based measurement can impact readings. Traditional cuff-based methods capture a momentary snapshot, while Shen.AI provides an averaged 60-second value.

Discrepancies between the two methods are normal, with reference devices having an error standard deviation of 3-5 mmHg. Consult a healthcare professional for any concerns. For more information check our guide. 

The Shen.AI system operates effectively with a smartphone that meets specific requirements. While it doesn’t necessarily demand the latest or best camera, there are certain specifications to consider:

Camera: The smartphone needs a camera that can be accessed through native platform APIs and delivers stable 30 FPS video at a minimum resolution of 640×480 pixels. While a higher quality camera can enhance accuracy, it’s especially beneficial for challenging lighting and stability situations.

Network: Internet connectivity is essential for license validation. Additionally, there’s an option for telemetry and crash reporting, which also requires internet access. Beyond these aspects, there are minimum network requirements based on the target platform.

For more detailed technical requirements visit developer portal. 

It takes under 1 day to integrate our SDK into your project. We have a lot of technical information, guidelines and examples available on the developer portal.

First vital sign, which is Heart Rate, is available in only 5 seconds, the rest for physiological reasons to keep the accuracy are available at the end of measurements in 60 seconds.

Yes, it can be also 30, or 45-seconds, however the accuracy of such measurement will be lower. 

Yes, front-end examples are available but they are not part of the core SDK. Front-end can be parametrized or built entirely by a customer.

The signal processing is based on the rPPG waveforms acquired optically from user face scan. Waveforms among other features are then used for AI based algorithms for estimation of systolic and diastolic Blood Pressure. We have 5 mln heartbeats (waveforms) in our database we are using for training of our AI models. We have collected this data on our own and they come from 42k recordings.

Health risk calculations are based on the Framingham Heart Study. For example, in the case of cardiovascular disease risk assessment, factors such as age, sex, blood pressure, cholesterol levels, and smoking history may be considered. The software may use statistical models and algorithms to analyze these factors and calculate a person’s overall risk of developing cardiovascular disease over a certain period, such as ten years. 

It’s important to note that any health risk calculation is only an estimate and cannot predict with 100% accuracy whether or not a person will develop a specific condition. Additionally, the accuracy of risk calculations may depend on the quality and accuracy of the data inputs and the particular algorithms and statistical models used by the software.

It’s always a good idea to consult a healthcare professional for personalized health risk assessments and advice.

As all SDK computations happen locally on the user’s end-device, their results are immediately available on-device after the measurement has finished. You can then easily send them to your system using technologies that you use for all other data transport.

All metrics are computed offline, on-device, without any server connectivity. The measurement result may be indefinitely persisted locally as part of the SDK integration. Internet connection is only required for license verification – after the initial verification the SDK may be used for up to 3 days without internet connectiv