Bought my smart scale and read the owners manual. The manual claims the scale works on carpets if you install four little plastic feet on the bottom. Not true! When I moved my scale from a wall to wall carpet in my living room to a tile floor in my kitchen I gained 22 pounds! Yes ladies and gentlemen, 22 pounds! For a month or so I looked like someone with an eating disorder. Now I am back in the pack with long distance runners.