how to lock iphone screen remotely

how to lock iphone screen remotely ? is this thing possible with a jail break device and normal one device ?

there is application find my iphone from ap开发者_运维百科ple it self but can we create our own one , I don't want to put on apple store so no worries for apple rejection.

If this things are possible then any one can suggest some tutorial or sample code ?

Thanks in advance.

Locking screens, remote wiping and more are available if you have a mobile device management server(MDM) handy. Check out this link.