YouTubeHOW TO FIND THE WIFI PASSWORD OF NEIGHBOURS AND TO KNOW OUR PASSWORD IF WE FORGOT (IN TELUGU)
LINKS:-
1)ZXing Decoder Online ----- https://zxing.org/w/decode.jspx
2)(QR CODE) IT IS AVAILABLE PLAY STORE ------https://play.google.com/store/apps/details?id=com.gamma.scan