The act of cleaning a keyboard shows the 5S principle called "Seiso" or Shine.In the 5S system, Seiso means keeping the workplace clean and free of dust or dirt. It ensures tools and equipment are regularly cleaned to prevent damage and promote efficiency.5S stands for:Seiri – Sort Seiton – Set in order Seiso – Shine Seiketsu – Standardize Shîtsuke – Sustain So, cleaning a keyboard is part of Seiso (Shine)—it helps improve hygiene and avoid problems like sticky keys or malfunctioning buttons.