A submersible device according to an embodiment of the invention includes a container configured to be selectively buoyant in a liquid. The printer preferably shares a common RFID readerwriter with an RFID scanner. This avoids the need for the customer himself to have to perform the tasks of installing the test data at the customer site. The method and apparatus also reduce the demand placed on ventilation systems needed to cool server environments, further reducing the amount of energy consumed andor wasted in the operation of a server system. However, the transmission may be explicitly or functionally conditioned by network connection strength, network availability and so forth.