Techniques for efficiently sending data in a wireless communication system are described. A battery acts as a source of driving a controlling power. Vertical studs are embedded in panels extending the full height of the panels, each stud has a flange and groove connected with a web. The system automatically provides compliance management procedures in order to comply with regulatory standards for the pharmaceutical industry. The receiving party calculates the target offset and length of the signed part in the serialized byte array and calculates a target hash value of the signed part by using the array and the target offset and length. The private chat application is adapted and configured to relay live text, audio and video messages between the client and therapist via the web browsers of the first and second computer devices.