A Smart Anti-Counterfeiting Optical System (SACOS) system comprising: a. an optical source operably coupled to a first optical fiber, and a distal end of the first optical fiber is operably coupled to an optrode for banknote analysis, wherein the optrode comprises an optical sensor device that optically measures a specific substance with the aid of a chemical transducer, and the optrode comprises a concentric optical fiber including a micron core for excitation and a micron core for emission, and the concentric optical fiber includes two layers of optical fibers in a rectangular shape; and b. the optrode is operably coupled to a distal end of a second optical fiber which includes a plurality of optical fibers arranged linearly into two columns for maximizing throughput into a spectrometer, and the proximal end of the second optical fiber is operably coupled to a detector, characterized in that the detector detects a polychromatic signal of a room temperature phosphorescence fingerprint, wherein the phosphorescence fingerprint is a combination of: wavelength, and lifetime of the phosphorescence signal; and c. a software component operably coupled to the detector comprising comparing the count peaks exceeding a predefined threshold against a predefined database; a relative scheme that includes the parameters of the with an additional step of comparing the ratios of the detected peaks; an advanced scheme that uses an Artificial Neural Network for recognizing the measured spectrum, where the advanced Scheme can account for partially distorted spectra and thus is the most robust scheme that would reduce the false positives probability; and a life time scheme that uses the decay of the phosphorescence of the material to discriminate between the different dyes used in the banknotes. a. an optical source operably coupled to a first optical fiber, and a distal end of the first optical fiber is operably coupled to an optrode for banknote analysis, wherein the optrode comprises an optical sensor device that optically measures a specific substance with the aid of a chemical transducer, and the optrode comprises a concentric optical fiber including a micron core for excitation and a micron core for emission, and the concentric optical fiber includes two layers of optical fibers in a rectangular shape; and b. the optrode is operably coupled to a distal end of a second optical fiber which includes a plurality of optical fibers arranged linearly into two columns for maximizing throughput into a spectrometer, and the proximal end of the second optical fiber is operably coupled to a detector, characterized in that the detector detects a polychromatic signal of a room temperature phosphorescence fingerprint, wherein the phosphorescence fingerprint is a combination of: wavelength, and lifetime of the phosphorescence signal; and c. a software component operably coupled to the detector comprising comparing the count peaks exceeding a predefined threshold against a predefined database; a relative scheme that includes the parameters of the with an additional step of comparing the ratios of the detected peaks; an advanced scheme that uses an Artificial Neural Network for recognizing the measured spectrum, where the advanced Scheme can account for partially distorted spectra and thus is the most robust scheme that would reduce the false positives probability; and a life time scheme that uses the decay of the phosphorescence of the material to discriminate between the different dyes used in the banknotes.