Since you are new, I'll tell you to post in the right section. This is a networking tips and tricks, else if you post here you'll never get a response since barely anyone browse here.
You can disable SSID broadcast and put up MAC address filtering.
Disabling SSID broadcast doesn't mean it's competely gone, the SSID still travel between the client and the access point/router. Disabling it just make it stop announcing the name of the network all the time.