OBEX
Object EXchange Protocol

Object Exchange Protocol was originally developed to allow the exchange of data objects over an infrared link. It can also be used over other transport layers such as RFCOMM (Radio Frequency Communications protocol) and TCP/IP. OBEX offers the same features for applications as within the IrDA (Infrared Data Association) protocol hierarchy, enabling the applications to work over the Bluetooth protocol stack as well as the IrDA stack. This protocol is typically used for file transfer and business card or vcard transfer.

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