Preemptive AI

[](https://www.preemptive.health/)
[](https://www.preemptive.health/)
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# The missing layer of healthcare.
Preemptive sits beneath primary care to guide action before symptoms or emergencies. We don’t replace doctors. We strengthen everything above us.
[Get your baseline](https://www.preemptive.health/get-baseline)[How the layer works](https://www.preemptive.health/how-it-works)
## The architecture of early detection.
Health isn’t static. It’s a moving picture. We built a system that moves with it, quietly observing and interpreting beneath the surface of your life.
### Quiet observation
We turn the camera on your phone into an optical sensor. By placing your finger over the lens for a brief moment, it captures subtle blood-flow patterns that reflect how your body is functioning beneath the surface. Those same signals can also be captured through enabled wearable devices, extending this continuous perspective.
### Quiet observation
We turn the camera on your phone into an optical sensor. By placing your finger over the lens for a brief moment, it captures subtle blood-flow patterns that reflect how your body is functioning beneath the surface. Those same signals can also be captured through enabled wearable devices, extending this continuous perspective.
### The model learns your normal
A single reading captures a moment, but health is defined by the trajectory. We aggregate thousands of passive measurements to build a living