Locking the ipad

Is there any way to completely lock the keys and screen on the iPad ?

I want to let my young son watch videos etc on it but don't want him to be able to touch the buttons or screen and change anything.

I'm not hopeful.

Ta.

 

You mean sort of like a hold button?

 

I mean sort of like no matter how many times he touches the screen nothing happens I suppose.

 

Solely from what Apple has to offer, I don't believe so. But there are a few methods to doing the same thing by jailbreaking which I can't say here as this is solely for clean iPads.