Abstract: A cardholder authentication method includes receiving, at an authentication network, an authentication request involving an account. The method further includes determining, based at least in part on a portion of an account identifier associated with said account, an authentication service. In addition, the method includes determining, based at least on said authentication service and a portion of said account identifier, an authentication response. The method also includes transmitting, to a merchant associated with a transaction involving said account, said authentication response.

Abstract: A sewer overflow relief device for mounting at a top end of a sewer overflow relief pipe includes a top cover having at least one outside air intake and an air flow control mechanism for controlling the flow of outside air into the sewer overflow relief pipe. In use, the device prevents outside water from entering the sewer and the device may be ejected from the sewer overflow relief pipe by sewage pressure pushing against the device, thereby allowing the sewer overflow relief pipe to overflow.