-{
- int i, n, j, h, binary[4], parity[4];
+{
+ int i, n, j, h, binary[4], parity[4];
+
+ char cmdp = param_getchar(Cmd, 0);
+ uint8_t uid[5] = {0x00};
+
+ if (cmdp == 'h' || cmdp == 'H') {
+ PrintAndLog("Usage: lf em4x sim <UID>");
+ PrintAndLog("");
+ PrintAndLog(" sample: lf em4x sim 0F0368568B");
+ return 0;
+ }