Does radio frequency identification technology allow information to be stored in such a manner?
The way in which virtually all RFID systems work is that an object or person is associated in a database with a serial number stored in an RFID tag, label or, in the case of a person, ID badge. When a reader interrogates a tag, the system knows which object or person has been identified via this database association. Most solutions also record the time, date and ID of the specific reader in the database, so that users then have a record of where and when that object was identified.
It is possible, of course, to write information about the object to the tag and learn about that tagged object via this information stored in the tag’s memory. The problem with this approach, though, is that if the tag is lost, so is the data. So to answer your question: Yes, data from the reader can and should be stored in a database.
—Mark Roberti, Founder and Editor, RFID Journal