http://www.airdefense.net/products/features/wep.php
Protect WEP from being cracked
AirDefense WEP Cloaking is the first and only patented technology to protect retailers and other organizations using the Wired Equivalent Privacy (WEP) security standard to protect networks from common attempts used to crack encryption keys. Leveraging the AirDefense Enterprise platform, the WEP Cloaking module uses the same Enterprise sensors to continuously protect access points, laptops and portable data terminals, in use by many retailers, from passive and active attempts to crack WEP encryption keys.