sighing up to mp with an address already used by family member by pass id checks?

[bonedaddy101]

from what I read it seems you're address has to be on your credit file or mp will ask for id.

I have a family member that says I can use their account they have recently moved and updated their address no problems however this address is not on their credit file.

Instead of using their account I wonderd if I could make an account with my details and their address and I was thinking because same ip as them etc, it might not ask for id because could verify the address in the fact their account has their address, or is this wishful thinking? of course I am aware the accounts will be linked.

Hope this makes sense

Thanks