What do tactile sensors measure?

• A. Touch, texture, and force
• B. Temperature only
• C. Visual information
• D. Auditory cues

Answer: (D)

Tactile sensors are meant to capture the physical feel of a surface as a robot touches it. They translate mechanical interactions into signals that tell you when contact occurs, where the contact is, and how much force or pressure is applied. They also pick up texture—the fine variations in a surface that reveal roughness or pattern as the sensor deforms or moves across the surface. This combination of touch, force distribution, and texture lets a robot assess grip quality, detect slippage, and handle objects more deftly.

Temperature, visual information, and auditory cues come from other kinds of sensors. Temperature requires thermal sensing, vision comes from cameras and light sensors, and sound comes from microphones. Some systems combine modalities, but the core tactile function is about mechanical contact and the resulting touch, force, and texture signals.