Observing our current environment reveals the insight that the number of smart devices increases rapidly. This reality can be summarized under the terms “Ubiquitous Computing”, “Internet of Things” and “Pervasive Computing”. In such an environment it is crucial to offer the users a pleasant and usable interaction possibility paired with a powerful user interface. However, the sad reality is that many of these devices lack a proper interface concerning the usability. The present thesis introduces two smartphone-based ad-hoc interaction methods utilizing NFC and QR code technology in order to couple a smartphone and smart device spontaneously and present a powerful UI. The suggested concepts are theoretically and practically evaluated in a performed usability study and compared to the direct interaction offered by a smart device’s minimal user interface. The gained results show that a NFC-based approach performs better in nearly every aspect compared to the other two approaches.