Current Affairs

Y-SMS Technology


  • For sometime now, Indian agencies have noticed infiltrating militants from Pakistan carrying smart phones without SIM cards. And they presumed the militants would procure local SIMs in Kashmir for using them.
  • However, latest inputs show that the militants are adopting the breakthrough technological solution, primarily meant to ensure basic mobile communication even when mobile networks are down, to overcome eavesdropping by Indian agencies.
  • Indian agencies can today listen in on VHF conversations, mobile phones and satellite phones.
  • With accurate interception and monitoring of these devices, intelligence agencies, the Army and the BSF have been very effective in neutralising several militants, especially when they infiltrate into India.
  • With the breakthrough capability to send bare mobile communications through VHF (very high frequency), the militants seem to have been successful in avoiding Indian agencies, especially during the crucial hours when they cross the Line of Control.


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  • The technology is to pair a smart phone with a radio set, and send out short SMSs, an SOS appeal or the exact location to other paired devices using line-of-sight very high frequency.
  • The first public discussion on the solution, and the most high profile product for it, emerged in the U.S. after the October 2012 Hurricane Sandy. The ineffectiveness of cell phones after mobile towers were destroyed by the hurricane was the reason for dreaming up the technological breakthrough.
  • This capability is secure even in high peaks and ravines, especially near the Line of Control where conventional mobile and satellite phones can give away their exact location.

Elaborate on the Principle and implications of Y-SMS technology.

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