The Reserve Bank of India said it is proposing a mobile application for visually impaired persons to help them identify Indian currency notes. At present Intaglio printing based identification marks for helping the visually challenged in identification of denomination of banknotes are present in notes of Rs 100 and above. The RBI has sought bids from technology firms for developing the app. The central bank said in a statement the proposed application should be able to identify denomination of legal tender banknotes of Mahatma Gandhi Series and Mahatma Gandhi (New) series by capturing the image of the notes placed in front of mobile camera or scrolled across it. Also, the mobile application should be searchable via voice option in all app stores, and the app should be able to identify the bank note denomination in 2 seconds or less, the RBI said. The app is also expected to work in offline mode without internet connection.