$1 by years end, page-271

Not sure if it uses mass spectrometer based tech, but based on the following it doesn't look like it.

A Reader is a patented wavelength spectral profiling system that ‘reads’ Markers by thedetection of energy from the ’read‘ object in response to an energy-ray applied to it.A Reader identifies a Marker in order to track and trace a product or raw material (as astand-alone Reader or by way of cloud-based verification technology) from the inceptionof the production process (or any other marked good along a supply chain) all the way tothe end customer.Each identification of a Marker is stored, either locally on the Reader, on private servers,cloud servers or on a blockchain record to store and protect data ownership.Markers can denote unique meanings for each product, batch and geography, resulting ina single or multipoint identification process. Unique meanings ascribed to Markers includeorigins of manufacturing, product provenance and date of production to the end customer.A common use is simply to use Markers to confirm the authenticity of a good or material.Markers can be embedded and identified in solids, liquids or gases.