中文摘要：

關於電腦詐欺之規範，我國直至1997年始新增刑法第339條之1至第339條之3，惟立法過程草率，加上條文用語模糊、欠缺足夠之明確性，致學說、實務上存有極大之爭議。本文先自電腦詐欺之一般規定即第339條之3進行討論，透過與德國刑法第263條之1的比較，了解「不正方法」、「輸入」、「虛偽資料」與「不正指令」等要件之解釋，並探求我國尚欠缺何種犯罪類型之規範。
　　刑法第339條之2自動付款設備亦屬電腦的一種，惟立法者既已於本罪就機器類型為特別規定，故僅論以本罪為已足。本罪之不正方法存有極大之爭議，有主張自「詐欺類似性」、「主觀說」及「設備使用規則說」等，應以何立場始能符合立法者欲一網打盡濫用自動付款設備之行為，又不致使構成要件之解釋失其明確性，乃此之重點。
　　刑法第339條之1自動收費設備的類型眾多，有些以齒輪機械運作，有些透過電腦程式，故是否屬刑法第339條之3行為客體，不可一概而論。本罪之不正方法係指行為人以看似符合機器操作之行為，實際上卻未為對價給付者，故若是以他人之硬幣購賣自動販賣機之飲料，非屬本罪之不正方法。
　　透過個別條文構成要件之討論釐清其間之關係後，本文將進一步討論常見的自動付款設備濫用行為，包括使用偽造、變造的提款卡、盜用他人的提款卡與逾越授權等情形，最後，就刑法第339條之1至第339條之3現行條文不當之處加以指出，並試擬修正後的具體條文。

英文摘要：

In 1997, to deal with the commitment of “Machine Cheating”, Taiwan enacted amendments of §339-1 to §339-3 in the Criminal Code of Republic of China (the Criminal Code). By comparing the new amendment of §339-3 with the §263a of the German Criminal Law, this thesis mainly focused on the interpretation of “Unlawful Method”, ”Input”, ”False Information”, “Unlawful Instruction Code” , and other statutory elements. Furthermore, this thesis pointed out the lack of certain type of enactments, which would correspondingly govern crimes of computer cheating.

　　The element “Automatic Payment Machine” of §339-2 also belongs the concept of “Computer”. This leads to the induction that a perpetrator could violate §339-2 and §339-3 at the same time. Since the Legislator has already enacted §339-2, imposing §339-2 on perpetrator would suffice. However, the interpretation of “Unlawful Method” is quite controversial. Some asserted “The Similar Character of Fraud”, some argued “Subjective Intent”, and others claimed “Service Terms of Machine”. In other words, the interpretation of Unlawful Method plays a key role to simultaneously satisfy the Legislator’s initiative of §339-2 as well as the principle of clarity and definiteness.

　　The element “Automatic Charge Machines” of §339-1 consists of many variations. Some serve by gear wheels, and others function by computer program. Therefore, whether all Automatic Charge Machines belong to the element “Computer” of §339-3 depends on case-by-case. In short, the “Unlawful Method” of §339-1 means the fact pattern that conductor benefits from the operation of machine, but actually she does not pay money out of her pocket.

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