Background <p>Older adults face increased risk of functional impairments after Emergency Department (ED) discharge, yet no evidence-based interventions exist for this population.</p> Objective <p>To evaluate the feasibility, safety, and effectiveness of Safe Steps, a text message + pedometer intervention designed to motivate individuals to meet step count goals.</p> Methods <p>We recruited ED patients aged ≥ 60 with low physical activity. Participants received a pedometer in the ED, daily text messages to report steps, and weekly prompts to set step goals over 4 weeks. We assessed step count reporting rates, falls, and change in steps over time.</p> Results <p>Among analyzed participants (<i>n</i> = 40), daily step reporting was high (95% of weeks with 2 + readings). No participants had falls due to the intervention. Step count increased by a mean of 359 steps per week (95% confidence interval 182–536).</p> Conclusion <p>Safe Steps appears feasible, safe, and may be effective for promoting activity after ED discharge.</p>