Automated Sales Suppression Device
An automated sales suppression device or zapper is a software program that falsifies the electronic records of point of sale (POS) systems for the purpose of tax evasion. Function Most jurisdictions levy a sales tax or a value added tax on commercial transactions such as sales in stores or food served in a restaurant. These transactions are now most often recorded by a POS system rather than a mechanical cash register. The POS system records are generally not alterable by the operator and are used as the basis of tax assessments and audits by tax authorities. Because POS systems are increasingly designed as general purpose computers (as of 2008, 85% worldwide were reported to run Microsoft Windows Windows is a group of several proprietary graphical operating system families developed and marketed by Microsoft. Each family caters to a certain sector of the computing industry. For example, Windows NT for consumers, Windows Server for serv ...), arbitrary software can be run ...
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Software
Software is a set of computer programs and associated documentation and data. This is in contrast to hardware, from which the system is built and which actually performs the work. At the lowest programming level, executable code consists of machine language instructions supported by an individual processor—typically a central processing unit (CPU) or a graphics processing unit (GPU). Machine language consists of groups of binary values signifying processor instructions that change the state of the computer from its preceding state. For example, an instruction may change the value stored in a particular storage location in the computer—an effect that is not directly observable to the user. An instruction may also invoke one of many input or output operations, for example displaying some text on a computer screen; causing state changes which should be visible to the user. The processor executes the instructions in the order they are provided, unless it is instructed ...
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