Engineering development moves through different kinds of knowledge. Confusing those levels turns intention into assertion and makes responsible comparison impossible.
Covert.bio will communicate each level separately, with the method, hardware state, sample conditions, and limitations needed to understand what was actually learned.
Trust depends on preserving the boundary between what is targeted, what is measured, and what is demonstrated in people.
Engineering target
A calculated operating window gives hardware a direction. It is a design input, not a measured capability.
Bench measurement
Functional hardware can establish waveform accuracy, flow, temperature, timing, sealing, and repeatability under controlled conditions.
Physical deposition
Recovered-dose analysis determines what quantity of payload reaches each sampled skin layer. This is distinct from applied dose and interface telemetry.
Sensing correlation
A relationship between impedance features and deposition must be demonstrated against paired physical measurements before it can support an inference.
Human tolerability and cosmetic outcomes
A mechanism measurement does not establish a human outcome. Tolerability, repeatability, and defined cosmetic endpoints require their own protocols and evidence.