You can connect to a wireless network using the WS103 wireless module.
BrightSign players support most commonly used wireless encryption formats: WEP (64 & 128), WPA (TKIP), and WPA2 (AES). WPA Enterprise is supported using EAP-TLS (with DER, PEM, or PKCS#12 certificates) and PEAPv0/MSCHAPv2 (with a username and passphrase). Wired authentication via 802.1x is also supported.
You can view a full list of WS103 specs here.
Note: Wired authentication via 802.1x isn't supported for WPA/WPA2 Enterprise.
In New Device Setup the wireless settings of a player are configured by checking Enable Wireless under Advanced Device Settings > Network Properties and entering the network's SSID and Security Key.
Also, any networked model that doesn't have a wireless module can use a wireless bridge (game adapter) connected to the Ethernet port.