Unauthorised program use prevention method - inserting installation chip card data carrier into test appts. before starting, interrogating card to check program addresses, and interrupting program with incorrect answer

摘要

Unauthorised software is tested using a base test appts. with an internal computer e.g. chip card with the program parameters on it. At different times, address comparisons are made. The program is allowed to run until a mismatch occurs during address comparison. The test chip card and the program data carrier are both connected to the computer. The program is input into the computer using a compiler. The program data carrier may be magnetic, optical, optomagnetic, electronic or mechanical, and the test appts. can be connected to a CD player or VTR. USE/ADVANTAGE - Several programs can be tested. E.g. for program copied on magnetic, optical, or electronic data carrier.