Securely joining a secure wireless communications network is described, for example, where a printer or other device is securely added to a home wireless network. In various embodiments, a temporary wireless network is established between a new joiner device and a second wireless communications device which is already a member of a secure home wireless network. In an example, the temporary wireless network is set up using a secret key known to the new joiner device and the second wireless communications device by virtue of physical proximity. In various examples, the secure, temporary wireless network is used to transfer credentials of the secure home network to the new joiner device which then joins the home network. In an example the temporary wireless network is cancelled once the new joiner device becomes a member of the secure home (or other) wireless network.