apple tv set up fo

How can I be sure that the contents of my other apple products (macbook air/ipad air/iphone 6 ) won't be accessible to anyone using my apple tv? I will have to set it up using my apple account. It will be in the family room for all to use. I already have an apple tv for my bedroom tv but I am the only one that uses that one. The second one will be for everyone and I am the only one with an Apple account so I will have to set it up with my info. Thanks.