“Face Time” on the iPhone 4 is getting a lot of attention these days because you can video-chat face to face as long as the other person also has an iPhone 4.  But if you don’t have an iPhone 4, you can still share live video from phone to phone by using a free app from

What it takes is any kind of iPhone or Android phone. It doesn’t matter if you’re using Android and your friend is using an iPhone, because the app is “cross platform.” This can be handy in an emergency if you wanted to share video of an accident or an attacker coming toward you, but its initial intent is fun. You could be at a sporting event and want your friends to see what you see, or maybe a bear is crossing your path and you want your friend to see it exactly at that moment. You can also point the cell phone lens at yourself and send a video message.

To receive a video, users get a “Knock! Knock!” sound on their phone that sounds like someone knocking at the door.  They tap once to answer the knock and view the streaming video.  This unusual service has added two million users in six months.

2 Responses to “KNOCK KNOCK”

  1. Lots and lots of people DON’T like it as they have no control who is invited to join………it invites everyone in your contact lsit.

  2. Thank you so much. We got snookered on this.