1. A method for data tag generation for a plurality of physical items in the control of a user based upon a plurality of physical item data records of an item data management server that correspond to a plurality of physical items in the control of a user, the item data management server communicatively coupled to a user terminal and a plurality of servers via at least one data network, the method comprising: presenting a data tag creation query to the user terminal, receiving, in response to the data tag creation query, a data tag creation response that includes a data tag format selected from a plurality of data tag formats, each of the data tag formats having a data size threshold; retrieving a key from the physical item data record, wherein the key includes a creator identifier and an item identification; retrieving a plurality of attribute values from the physical item data record; creating a data tag criteria based upon the key and the plurality of attribute values of the physical item data record; generating a data tag based upon the key and the plurality of attribute values of the physical item data record; and presenting the data tag identifying the physical item.