Remote health monitoring (RHM) technologies (e.g., wearables, smart phones, embedded sensors, telehealth platforms) offer significant opportunities to improve health and wellness for older adults facing serious illness. This paper highlights key challenges and opportunities for designing and deploying RHM systems in the context of caring for older adults with cancer, with an emphasis on the key role nurses can play in this work. Focal topics include user-centered design; interdisciplinary collaboration; addressing health inequities and disparities; privacy and data security; participant recruitment and burden; personalized and tailored care; rapid technological change; family caregiver perspectives; and naturalistic data collection. It is critical for nurses to be aware of both challenges and opportunities within each of these areas in order to develop RHM systems that are optimally beneficial for patients, family caregivers, clinicians, and organizations. By leveraging their unique knowledge of the illness experience from the patient, family, and healthcare provider perspective, nurses can make essential clinical and scientific contributions to advance the field of RHM.