The Indian Army has developed an in house messaging application called ‘Secure Application for Internet (SAI)’ for its personnel to prevent “leaking” of any classified information to inimical intelligence agencies. ‘SAI is a simple and secure messaging application, which supports end-to-end secure voice, text and video calling services for Android platforms over the internet. It will be utilised pan-Army to facilitate secure messaging within the service,’ said an officer on Thursday. SAI was first developed by Colonel Sai Shankar, the commanding officer of a signals unit in Rajasthan, and then upgraded to military-grade standards. Defence minister Rajnath has also complimented Col Shankar for his “skill and ingenuity” in developing the application. With Chinese and Pakistani online espionage agents constantly on the hunt to surreptitiously obtain classified information and data, the Army last year had directed its personnel to avoid the use of WhatsApp for official work. It had also asked officers holding “sensitive appointments” to delete their Facebook accounts.