This invention relates to an isolated nucleic acid fragment encoding a starch branching enzyme. In an example embodiment of the wireless transceiver, the wireless transceiver receives a first-reference signal having a first-reference frequency. In a first step, a first reference signal is sent from the second station to the first station. The first communication partner tests whether the trustworthiness certificate belongs to the participant by using the participant private key. Further, the ECS can include components for scheduling events, such as monetary transfers and bill payments, and providing reminders for such events. By adopting this design, a carrying handle with a minimized projection space is provided to reduce the luggage’s storage space.