The most effective way to do this is write COLOR 0,0
before the
INPUT "Enter Password: " COLOR 0, 0 INPUT "", PASSWD$ COLOR 7, 0 IF PASSWD$ = "Secret" THEN PRINT "Access Granted" ELSE PRINT "Access Denied" END IF(Download)
This looks like:
Enter Password:
Secret
Access Granted
(TODO: Add some encryption/obfuscation?)