A micro-optical-mechanical-electro-system -based non-invasive blood glucose monitor comprises a micromachined infrared optical filter array, a micromachined infrared mechanical modulator array, at least one micromachined infrared tunable filter, and at least one infrared detector. An authenticated identity for a callee answering a call placed to a destination device is received at an intermediary device. The digital data is a series of logic numbers.