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Ubiquitous computing aims to enhance computer use by not only making many computers available through the physical environment, but making them effectively invisible to the user. Scenarios are examples of interaction sessions, and consist of descriptions of sequential actions which relate to real-life examples rather than abstract descriptions of the functions. This paper presents a scenario-based approach for carrying out the requirements elicitation process for software systems complying with the utilization of ubiquitous computing technologies. The focus is on the elicitation of the functional requirements in a user requirement form. The steps followed in this approach to carry out the additional-requirements elicitation process are scenario description in plain text, scenario analysis and finally scenario modeling in Business Process Modeling Notation (BPMN). The proposed approach is demonstrated using a case study to show that this approach is feasible and promising in its domain.