A commuter license enables your end user to “check out” an authorization for a license for temporary use on a portable computer. Your vendor selects whether a network license code will be a commuter license when creating the license code.
Commuter licenses can also be redundant licenses. Your end users can use WCommute (for Windows) or lcommute (Windows or UNIX) to check out a license authorization from any of the redundant license servers. However, the customer must check that authorization back in to the same license server from which it was checked out.
Because commuter licenses may automatically expire after specified number of days (except for unlimited check-out of a unexpired licenses), there is no real reason for your customer to check the authorization back in unless the redundant license server pool is running low on commuter license tokens (which you can check by using lsmon or WlmAdmin).