Are there GFCI outlets without buttons?

I'm curious to understand a technical aspect of GFCI outlets. Could you please elaborate on whether there exist GFCI outlets that do not feature the traditional test and reset buttons? My understanding is that GFCI outlets are designed with safety mechanisms to prevent electrical shock hazards, but I'm wondering if there are modern alternatives that perhaps forego the need for manual testing. Is this feasible in today's market, or are the buttons an essential component of GFCI outlets? I appreciate your insights into this matter.