Patent ID: 8914310

Claim:
A control unit for an ionic foot bath system comprising: an input device configured to receive a first indication of an operational time of the ionic foot bath system; a display device configured to display information to a user of the control unit; a processor communicatively coupled to the input device and the display device; and a storage device communicatively coupled to the processor and configured to store a computer-executable code that, when executed by the processor, causes the control unit to perform the operations of: generating by the processor a first key in response to the indication of the operational time; displaying, on the display device, the first key, a serial number associated with the control unit and a set of instructions to a user to complete the operational time selection with an authorization source; receiving, from the authorization source or input device, a second key encrypted using the first key and including an indication of the operational time; decrypting by the processor the second key using the first key; and activating the ionic foot bath for a time corresponding to the operational time indicated by the decrypted second key.