| http://www.w3.org/ns/prov#value | - need to. [0016] The MRCD can incorporate advanced features, such as store and forward, that will hold a message sent when the user is in a remote area, until a URTFM is again within range of the device. [0017] Other features such as location tracking can be provided by triangulation functions available through the UWB physical layer, or via co-located Global Position System (GPS) equipment.
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