Correlated Data
Correlated data in where each item in one data set is paired to exactly one item in a different data set. Since each element in once data set must be uniquely matched to one items in another data set, both data sets must contain variable data and not bulk data. Correlated encoding data is often used when a physical item has two tag technologies; for example a QR Code printed on an NFC tag or a dual NFC / UHF RFID chip such as the EM4425.
Example of correlated data:
{
7693 -> apple,
8364 -> bear,
9326 -> cat,
7645 -> dog
}
7693 -> apple,
8364 -> bear,
9326 -> cat,
7645 -> dog
}