Abstract: Methods and systems for program code conversion for cross-platform compatibility are disclosed. A plurality of original function calls are identified in an original program. The original program is targeted to a first platform, and the original function calls comprise invocations of a plurality of functions implemented on the first platform. It is determined whether individual ones of the original function calls correspond to alternative function calls in an index. For the original function calls that correspond to the alternative function calls in the index, the original function calls are replaced with corresponding alternative function calls in a modified program. The modified program is targeted to a second platform, and the alternative function calls comprise invocations of a plurality of functions implemented on the second platform.

Abstract: A method and system for detecting that an object, person or vehicle has deviated in space or time from its prescribed route, and guiding it back to the prescribed route, according to strictness criteria predefined by a controlling authority or authorities. The invention allows controlling authorities to pre-specify a level of strictness suiting the object, person or vehicle and purpose of travel, by which the object, person or vehicle is guided back to the prescribed route autonomously, enabling return to route according to established policies, without the necessity of further communication with controlling authorities. The method and system thus operate semi-autonomously, with strictness parameters predefined by the central authorities, and the object, person or vehicle operating with some degree of latitude within those strictness parameters.