"Ever had those moments where you were sending an SMS message to a friend and you said something you REALLY didn’t wanna say? Ever had those times where you regretted sending those hate messages to your ex? Well, Samsung has patented a method than will allow you to unsend a text message once you hit “Send”."
Outstanding idea and long overdue. Wouldn't it be simpler though to just have a time delay that could be set by the user before a SMS message is sent?