近年來國內外食品安全問題的發生日漸頻繁，黑心食品充斥等事件層出不窮，包括近期比較嚴重的塑化劑事件、三氯氰氨毒奶事件、過期品標籤重貼等等；日常生活用品上的安全問題也時有所聞。
目前，國際防偽領域逐漸興起了一股利用電子技術防偽的潮流，而射頻識別技術正引起了防偽專業的廣泛關注。射頻識別技術由電子標籤、讀寫器和應用軟體系統這三個部分組成，是一種非接觸式的自動識別技術，通過射頻信號自動識別目標對象並獲取相關數據，能夠有效解決產品假冒偽造的現象。
本研究利用 NFC 技術及數位簽章發展產品資訊防仿冒技術，其防偽概念並不是利用單純的防偽標籤設計，而是利用電子標籤的加密資訊配合後台的一整套跟蹤、追溯系統來達到防偽效果。本系統可透過電子標籤上產品資訊的追溯，並利用 NFC 技術和智慧型手機的操作，使產品資訊方便、即時的呈現在消費者面前。我們透過三種加密技術和數位簽章的處理，能防止電子標籤上的資料被竄改，不但可以提升產品情報資訊的可靠性及產品的防偽能力，更可讓消費者買得安心。

Recently, food safety issues are on the increase nationally and globally. Unsafe food events are all over the place, including the plasticizer food scandal, melamine-tainted milk powder scandal, and re-labeling of expired food, etc. The safety issues of everyday items also prevail in our life.
So far, there is a rising trend in the international anti-counterfeit field which employs electronic technique in defending against fakes and radio-frequency identification technology receives attention from anti-counterfeit professionals. Radio-frequency identification technology is made up of electronic label, reader, writer, and application software. It’s a non-contact auto-identification technology that acquires relevant data using Radio-frequency signal to automatically identify the target object, which effectively solves the problem of counterfeit.
This research takes advantage of NFC and digital signature to develop product information anti-counterfeit technology. The concept is to utilize not only the simple design of anti-counterfeit labeling but also the encrypted information in electronic label with a tracing system at backend to anti-counterfeiting. This system can get the product information through electronic label by using NFC and the operations of smart phones which display the product information to the customers easily and immediately. We can use three kind of encrypt technology and digital signature to protect the information of electronic label from being tampered. It can not only increase the reliability of the information and the security capabilities of the products but also allow the customers to shop without worry.

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