It is a location-based service in which an app or other software uses GPS, RFID, Wi-Fi or cellular data.
It works to trigger a pre-programmed action when a mobile device or RFID tag enters or exits a virtual boundary set up around a geographical location, known as a geofence.
The “geo-fencing” is accurate by up to 300 meter.
The States have been asked to seek the approval of their Home Secretaries under the provisions of the Indian Telegraph Act, 1885.
It is for the specified mobile phone numbers to request the Department of Telecom to provide information by email or SMS in case of violation of “geo-fencing”.