The correct answer is geo fencing.
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what is geo fencing?</h3>
A geofence is a fictitious geographic boundary that can be entered or exited by a mobile device or RFID tag. Geofencing is a location-based service in which an app or other software programme uses radio frequency identification (RFID), Wi-Fi, GPS, or cellular data to trigger a targeted marketing action (such as a text, email, social media advertisement, or app notification).
There are three ways to use this technology to target customers: geotargeting, geofencing, and beaconing. You can track a consumer's location using GPS, Bluetooth, and beacons.
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Answer: Start rinsing your teeth and gums with help of brush in a circular way.
Explanation:
