Abstract: An embodiment provides an electronic device, including: a wireless communication unit; and a processor operatively coupled to the wireless communication unit; and a memory that stores instructions executable by the processor to: scan and acquire wireless device signal data; determine, based on the wireless device signal data, that the electronic device is within a preset range of a wireless device; and determine a geographic position of the electronic device based on the electronic device being within the preset range. Other aspects are described and claimed.

Abstract: An annotation retrieval module may be configured to retrieve annotations added to sample data, the annotations having been added according to an annotation rule. An analysis tool may be configured to create a logical schema and a configuration file from the retrieved annotations, according to the annotation rule. The logic schema may represent a tree structure containing one or more data elements corresponding to the sample data, and the configuration file may define one or more operations for adding DFDL annotations into the logic schema. A DFDL schema generator may be configured to generate a DFDL schema for the sample data according to the logic schema and the configuration file.