Robots depend on tactile perception for precise manipulation, using touch feedback to maintain dexterous, closed-loop force control. Among the many tactile sensing techniques, magnetic tactile sensors are a notable approach, measuring contact through changes in magnetic fields.
A new arXiv preprint, PhantomTac, describes a way to hijack such sensors using deploy-and-forget tags. The tags are placed in the environment and interfere with the magnetic sensing, causing the robot to perceive tactile signals that never occurred.
The paper positions this as an attack on the physical sensing layer rather than the software layer. Because the tags can be deployed and left in place, the attack does not require ongoing access to the robot. The work underscores that tactile perception, while essential for manipulation, can itself become a vector for deception.