Encryption‐Decryption Strategy of High Security Constructed via Encoded Fluorescence Sensing and Linear Discriminant Analysis Technique

Abstract Innovative fluorescence materials combining the special reagent stimuli response have considerable potential to provide a convenient and highly secure communication strategy for encoding messages. With the unique decryption method, encrypted information that is previously unidentifiable can now be accurately parsed without the risk of interception or decipherment. Herein, white‐emitting light semiconducting polymer dots for advanced secret communication are developed, along with a machine learning‐based encryption‐decryption strategy. The encrypted data are readily hidden by the fluorescent polymer‐stimulus system, which can be identified by fluorescence imaging equipment and only be decrypted via the special linear discriminant analysis route pre‐transferred to the recipient. The results presented here suggest that chemical‐stimulated fluorescence information storage and the unique decoding strategy can be developed as prospective methods for advanced data communication and security protection.