Apple just released iOS 7.0.2 and already people have found a way to circumvent the lockscreen. The new procedure is quite a bit more complicated but once completed it will give access to the phone application. From the phone app users can send information via email or text/iMessage on the victims phone.
Steps to complete the procedure.
1. Make a phone call with Siri
2. Click Facetime
3. When Facetime pops up put your device to sleep
4. Turn on your phone and swipe
5. Answer and end the Facetime call at the other end
6. Click the + cancel the menu and then end the call. After a while you will be in the phone app.