Abstract: A builder, tester, and runtime integration system and method for a graphical touch user interface, such as a point-of-sale (POS) touch screen interface system, is provided. The system and method may include a builder tool to create and modify the graphical interface, a tester tool for testing the interface, and a run-time system for actually executing the interface logic. Because the interface may be designed, modified and tested external to the run-time system, the design and maintenance may be performed by a non-programmer without ever changing run-time code. Additionally, the builder and tester may be designed to be general-purpose, and the run-time code may be reusable.

Abstract: A builder, tester, and runtime integration method for a Point-Of-Sale, Windows DynaKey.TM., or equivalent, interface that is less expensive than previous methods because: human interface and software personnel work in parallel in building and modifying the interface using NICE customized DKItem/DKList objects, a significant amount of interface maintenance is done without ever changing the runtime code since the interface is external, much of the code for the builder program and tester program is general-purpose, and most of the complex, event-driven runtime code is reusable.

Abstract: A method for recording compressed data which includes a perpendicular test as well as a parallel test for discarding handwritten data points relative to a series of guide lines. The parallel test determines whether a data point lies at a true distance within a predetermined threshold distance either side of the guide line. The perpendicular test determines whether the data point lies between two perpendicular lines through the end points of the guideline. Both tests must be satisfied before a data point is discarded. To save memory space, the guidelines are defined by an endpoint and a delta value. Error is maintained at a predetermined limit by adjusting the delta values prior to storage.

Abstract: A handwriting verification method which is less expensive to implement than previous methods, employs simpler algorithms than previous methods, and which requires fewer points than previous methods. The method includes the steps of determining a set of positional data points for a handwritten signature entered into the digitizer, determining a set of global variable values associated with the signature from the positional data points, determining head and tail strings having shape information for the signature, reading previously computed head and tail strings from a storage medium carried by the person, reading the verification information from the storage medium, determining a range of acceptance values for each global variable, and determining whether each of the global verification values lies within the range of acceptance. If at least one of the global verification values lies outside the range of acceptance, the method further includes the step of rejecting the subsequent signature as a forgery.