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Déjà Vu - A local RF based back end for the µg Pro

Mobile/cell and WLAN/Wi-Fi based network provider for UnifiedNlp and microG
Version: 1.1.12
Added: 15-12-2017
Updated: 22-08-2019
UnifiedNlp backend that uses locally acquired WLAN/Wi-Fi AP and mobile/cellular
tower data to resolve user location. Collectively, “WLAN/WiFi and
mobile/cellular” signals will be called “RF emitters” below.

Conceptually, this backend consists of two parts sharing a common database. One
part passively monitors the GPS. If the GPS has acquired and has a good position
accuracy, then the coverage maps for RF emitters detected by the phone are
created and saved.

The other part is the actual location provider which uses the database to
estimate location when the GPS is not available.

This backend uses no network data. All data acquired by the phone stays on the
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