Call it ubiquitous computing, the internet of things or whichever moniker you prefer but what you are describing remains the same, the network of internet enabled sensors, identifiers and broadcasters which now surround us.  For many this is not something they think about but for the technologically inclined it is a topic of much interest with many concerns to address of which the prime suspect is privacy.  The Inquirer has been hosting discussions on this topic and the possibilities that are created by the massive growth of the internet of things.  Check out the debate on how this will impact privacy here.

"THE INTERNET OF THINGS is a term that has been around for about 15 years, with its origins in barcodes and radio frequency identity (RFID) tags, and evolving via near-field communications (NFC) and QR codes. But it's the rise of smart devices and wearable technology, which has only started to take off in the past few years, that will see the Internet of Things come into its own."

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