Generally speaking, metal does not allow light penetration and therefore cannot be scanned using SCIO. With metal, all light is reflected off the surface, which means SCiO doesn't have any molecular fingerprint when scanning metal to collect and analyze.
The current configuration of SCiO does not support metal detection or the identification of alloy makeup.
Having said that, if in high enough concentrations, metals may be detectable when found in other substances such as paint. This depends on the substance and the concentration as well as the surface underneath.
We have not run feasibility or thorough testing ourselves.
(Relevant Product: SCiO DevKit)