Beam Messenger shows friends what you type as you're texting, even if you decide to delete it.Normally when you text someone on your smartphone, the recipient can't tell if the words glowing on their screen were composed off-the-cuff or were carefully planned and edited-depending on the app, the most they're likely to know is whether you're typing or not. An app called Beam Messenger changes that by showing users what their conversation partner is writing as they write it, blurring the lines between texting and talking.