A new generation of devices called transcoders are available that combine aspects of encoders and decoders into one device. These enable bidirectional command and control as well as confirmation that the command was received by the remote end. These devices can range from encoders and decoders with confirmation, to transcoders with a set number of inputs and outputs, to devices that are completely dynamic and configurable by the manufacturer or end user. These devices can be used in applications such as a car paging the keyfob to indicate that the car alarm has activated.