Technology that supports older adults can have a positive effect on their psychological and physical well-being in a way that they may live independently for longer periods of time. This study is conducted to identify relevant factors that influence the use of smart home and telecare technologies in order to develop a measurement tool for telecare acceptance. In this study we revise the original Technology Acceptance Model (TAM) to explain the use of smart home and telecare technology by older adults. The model will be tested in the field by researching the use of telecare technology (with multiple functionalities, such as personal alarms, screen-to-screen communication, and teleservices) by approx. 100 Dutch households. The research will provide guidelines for design, implementation and functionality of smart home and telecare technology for older adults. It will provide insight into what features contribute to effective use of technology for older adults who live at home independently.