     }
     Serial.print(F("Data in block ")); Serial.print(blockAddr); Serial.println(F(":"));
     dump_byte_array(buffer, 16); Serial.println();
-        
+
     // Check that data in block is what we have written
     // by counting the number of bytes that are equal
     Serial.println(F("Checking result..."));

 * SPI MOSI    MOSI         11 / ICSP-4   51        D11        ICSP-4           16
 * SPI MISO    MISO         12 / ICSP-1   50        D12        ICSP-1           14
 * SPI SCK     SCK          13 / ICSP-3   52        D13        ICSP-3           15
 * 
 */

#include <SPI.h>

    Serial.print(F("Using key (for A and B):"));
    dump_byte_array(key.keyByte, MFRC522::MF_KEY_SIZE);
    Serial.println();

    Serial.println(F("BEWARE: Data will be written to the PICC, in sector #1"));
}

