A computing device includes at least one master unit; at least one slave unit; an interconnect structure configured to route transactions from the at least one master unit to the at least one slave unit; and a transaction logger device configured to intercept and save a record of outstanding transactions sent by the at least one master unit to the interconnect structure. As the dot code is scanned by a reading device, the URL is restored and the information resource that corresponds to the URL is accessed by the access device. The tubular members may be arranged so that the second tubular member extends distally beyond the first tubular member. In yet another aspect, a method of applying the wound treatment system to a patient’s leg is disclosed.