US Patent 9104924 Temperature tracking device and method using same

A device for monitoring conditions within an environment in which an item is disposed includes a environment monitoring tag operably disposed adjacent an article to sense environment surrounding said article and store environmental data sensed, wherein said tag is equipped with software and hardware to communicate said data using Near Field Communication and a hand held communication device equipped with software and hardware to communicate using Near Field Communication to receive environmental data sensed by said tag and analyze said data.