Apple has filed a trio of patent applications that indicate additional functionality for future iPhones. Of most interest here is an application that covers the use of the iPhone’s touchscreen as an RFID reader(sensor). The company has found a way to embed an RFID sensor in the phone’s touch panel, enabling it to read RFID tags. RFID, or radio frequency identification, is often used for local asset tracking and could have some interesting applications in the area of augmented reality.

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