Adafruit fingerprint code explanation

[blh64]

Good catch! That should be

 // filtering only the data packets
  int uindx = 9, index = 0;
  memcpy(fingerTemplate + index, bytesReceived + uindx, 256);   // first 256 bytes
  uindx += 256;       // skip data
  uindx += 2;         // skip checksum
  uindx += 9;        // skip next header
  index += 256;       // advance pointer
  memcpy(fingerTemplate + index, bytesReceived + uindx, 256);   // second 256 bytes