A new iPhone app, Black SMS, attempts to keep your private SMS conversations undercover, by literally covering them in a black shroud until youâ€™re ready to read them.
The Black SMS app is available in the App Store for $0.99. It will allow you to black out the messages using iMessage of Apple. Once you receive a black SMS, you just have to copy it from the Messages folder and paste to the Black SMS app. This is similar to the invisible ink used in the past. Reading the black SMS needs a decoder which is a password in this case.