The Withings scales definitely do not. Personally, I've only ever had one scale in my life that I thought might be using memory to give false consistency. But

The Withings scales definitely do not. Personally, I've only ever had one scale in my life that I thought might be using memory to give false consistency. But even then, it was short-term, not long term. I.e. if you stepped off and back on, it might bias towards giving you the same weight. If you walked away for a bit, then came back with a small extra weight in your hand, it was accurate.