That was my second paragraph - and to be clear, they don't want to ban it, they want to backdoor it.

My idea was that rather than ban it outright and make it like most other internet traffic (decrypted on a server), they could mandate some kind of cacheing of the _encrypted_ data on the server. Then, once they'd lawfully executed a warrant to grab the suspects phone, they can decrypt at their leisure. Apps using per-message keys will probably be a no-no.

Myself - I live in the UK - I hope Apple, Google and Facebook all say a big "fuck you" and cut this country off from their services, but I have a feeling the 'compromise' is going to be something like the paragraph above.