Neurotechnologies under development are often explicitly justified in terms of the advantages they will provide to disabled people. Thus, it would seem important to know what disabled people want from current and future iterations of these technologies and how they experience the functional barriers the technologies are meant to address. Ensuring that disabled people want what is designed requires attention to “end user” needs and values. The paradigmatic form of end user input in device design focuses on device acceptability, usually happens late in the development process, and is oriented to economic viability. But seeking out and taking seriously the perspectives of disabled people (potential end users) should be grounded at least in part by considerations of justice, including both distribution and recognition.