How to configure to hide the SSID from the GUI on the Cisco IOS-based access point
In order to hide the service set identifier (SSID), the access point ideally does not broadcast the SSID. Complete these steps in order to stop the broadcast of the SSID:
Some wireless cards do not work properly if the SSID is not broadcasted, since the Institute of Electrical and Electronics Engineers (IEEE) and WI-FI standards state that the SSID should be broadcast.
Configure / Configuration issues
Release notes / product overview / data sheet / FAQ
Cisco IOS Software Configuration Guide for Cisco Aironet Access Points, Cisco IOS Release 12.3(8)JA
This was helpful for the customers that have legacy equipment
and for the support folks tired of telling them this ssid is not open to guests. now its hidden and a non issue.