I am working on an app that would lock your phone remotely. I know it can be done like this app did (http://www.cnet.com/8301-19736_1-10306647-251.html).
1) Can you lock your phone from your code and password protect the screen so the user has to enter a password in order to use the phone?
2) Can you also put custom text on the locked screen after you lock the app?
Any help will be highly appreciated.