GS1 is an international standards organization,which focuses on product identification and product data,helping businesses and governments to improve commerce and supply chain.Why trusted data is essential to high-qua...GS1 is an international standards organization,which focuses on product identification and product data,helping businesses and governments to improve commerce and supply chain.Why trusted data is essential to high-quality development?More than 50 years ago,GS1 was initiated with the bar code,a profound transformation of the way we work and live.From then on,a simple scan connected a physical product to its digital identity.It transformed commerce,improving supply chains and enabling safer healthcare.Collaboration between industry and governments,and a strong partnership with ISO and IEC laid the foundations for the global adoption of a common product identification over the past 50 years and all around the world.展开更多
Morse code,as a well-known digital communication method,not only revolutionized information transmission throughout history but also continues to serve modern specialized communication needs.By using modern optical te...Morse code,as a well-known digital communication method,not only revolutionized information transmission throughout history but also continues to serve modern specialized communication needs.By using modern optical technologies to embed Morse code,the unique characteristics of the code can be leveraged to achieve more secure encryption.Therefore,a secret hologram key based on polymer dispersed liquid crystal photonic crystals(PDLC-PCs)is proposed to compose a sequence of enciphered messages using matrix Morse code.This hologram key is fabricated by multipass holographic interference with different information in each light channel.During the decoding process,we use a series of reconstruction orders under various diffraction angles to obtain several dynamic digit matrices.These different digit matrices can provide Morse code for code words according to the holographic conjugate images.From this,we can identify the corresponding Morse code based on the ciphertext and thereby decipher the plaintext message.This method can help us hide the actual elements required for the combined secret information within the hologram key,allowing for the dynamic combination of confidential information as needed.展开更多
摘要GS1 is an international standards organization,which focuses on product identification and product data,helping businesses and governments to improve commerce and supply chain.Why trusted data is essential to high-quality development?More than 50 years ago,GS1 was initiated with the bar code,a profound transformation of the way we work and live.From then on,a simple scan connected a physical product to its digital identity.It transformed commerce,improving supply chains and enabling safer healthcare.Collaboration between industry and governments,and a strong partnership with ISO and IEC laid the foundations for the global adoption of a common product identification over the past 50 years and all around the world.
基金National Natural Science Foundation of China(62475158)。
摘要Morse code,as a well-known digital communication method,not only revolutionized information transmission throughout history but also continues to serve modern specialized communication needs.By using modern optical technologies to embed Morse code,the unique characteristics of the code can be leveraged to achieve more secure encryption.Therefore,a secret hologram key based on polymer dispersed liquid crystal photonic crystals(PDLC-PCs)is proposed to compose a sequence of enciphered messages using matrix Morse code.This hologram key is fabricated by multipass holographic interference with different information in each light channel.During the decoding process,we use a series of reconstruction orders under various diffraction angles to obtain several dynamic digit matrices.These different digit matrices can provide Morse code for code words according to the holographic conjugate images.From this,we can identify the corresponding Morse code based on the ciphertext and thereby decipher the plaintext message.This method can help us hide the actual elements required for the combined secret information within the hologram key,allowing for the dynamic combination of confidential information as needed.