Program Protector



Sinclair User has received several queries as to how a

program can be protected from unauthorised users. Add this

short routine by Marjan Klenovsek of Celje, Yugoslavia to

your programs, and LISTing will become useless. A listing

will be produced but the numbers in it will be scrambled.

This gives the impression that the program listing is

correct, although it will later be found on entering it

that this is not the case.



[A remarkable testimony to the international nature of the

Spectrum community - in 1983 Yugoslavia was still behind

the Iron Curtain, but they were part of us even then.]