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 # CZI presence detector
-Tool to detect the presence of pre-defined devices by their WiFi MAC addresses.
+Tool to detect the presence of defined devices by their WiFi MAC addresses.
 
 ## How scanning works
 Sets the wifi adapter into monitor mode, then listens to surrounding packets listing all detected devices into `wifi_map.yaml`. Resets the wifi adapter to normal mode for uploading the results, filters the results by the mac addresses in `identities.yaml` and sends all matched identities to the front-end webhook server in `website`. This server stores the presence information locally and displays it with `website/index.php` with a timestamp of the last update.