You can make them not send teh statements, but yeah, they can see what you buy.
I'm not100% sure, but if you create a joint account, you can come back teh next day and say you wanna unjoin it, it just needs a signature from everybody.
I'm not100% sure, but if you create a joint account, you can come back teh next day and say you wanna unjoin it, it just needs a signature from everybody.