The Chinese government has recently promoted community-based eldercare supported by digitally programmed “smart” health and safety devices placed in homes to address the perceived pressure of a rapidly ageing population. This is envisioned as a solution to the growing need for eldercare that simultaneously enables ageing in place, facilitates digitally mediated population governance, and provides a safety net for older people residing in the community. However, the top-down practices of smartening older people’ homes have encountered a series of frictions in their implementation. By examining the frictions in smart eldercare programs, this chapter highlights older people’ varied capacities to modify, resist, or misuse smart eldercare devices. In so doing, they collectively co-produce the smart envirionmentality that shape the ageing population. This chapter re-conceptualizes smart eldercare within a ‘smart environmentality’ framework, highlighting its co-production by older people and stakeholders through collaboration. It contributes to the literature on biopolitics and critical ageing studies by revealing the interactions of digital governance, glitch politics, and co-production.