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The adaptation of digital forensics solutions to the requirements and characteristics of the Internet of Things (IoT) is an ongoing process which has turn out to be quite demanding due to the novelty of this environment. The differences between the IoT and conventional scenarios in which forensic investigations used to took place, namely the desktop and the smart phone, are too great to be able to address IoT examinations by following a common approach. However, developing brand new solutions does not seem the best approach to follow either, since there are not many IoT-centered tools, and a drastic change might hinder the use of this new proposals in a court of law. Therefore, the development of solutions to ensure that IoT investigations are carried out in a complete and efficient manner might need to be performed by adapting the widely-accepted conventional ones to this new scenario. In this sense, this article proposes a concept methodology for conducting IoT investigations which uses a generic forensic model as a reference.