 }
 
 /*
-	Checksum: Function that calculates the checksum of a packet to ensure
-			  data integrity.
+	Calculates the checksum of a packet to ensure data integrity.
 
 	Param: A[] 		- array containing all bytes in a packet
 		   numBytes - number of bytes in the array
 
-	Post: Returns checksum.
+	Returns: checksum
 
 */
 unsigned char checksum(unsigned char A[], int numBytes) {

}

/*
	MiFare Classic SNR: Function that gets the serial number of an RFID tag.

	Post: Response packet contains OK status and serial number of the tag selected


}

/*
	Writes to the selected RFID tag.

	Param: numBlocks 	- number of 16 byte blocks to be written to (max 3)
		   startAddress - address of the first block (0 - 63)
