Wireless client isolation is a feature that, when enabled on a wireless access point, prevents direct communication between wireless-connected devices. This function is essential in places like hotels, where guest privacy is a priority, and it reduces the risk of attacks such as snooping or unauthorized access. Although creating multiple SSIDs or implementing VLANs can segregate traffic, they do not inherently prevent communication between devices connected to the same SSID or VLAN. MAC filtering restricts device access to the network but does not prevent inter-client communication once devices are connected.