A server system sends a first credential request to a passive requestor at a client device. After sending the first credential request, the server system receives a credential for a user of the client device. If the credential is valid, the server system can provide the passive requestor with access to a resource provided by the server system. After providing the passive requestor with access to the resource, the server system provides an active requestor at the client device with access to the resource without sending a second credential request to the active requestor. Consequently, it may not be necessary for a user of the client device to provide credentials twice in order for the passive requestor and the active requestor to access the resource.