Radhen Patel, a postdoc in MIT’s Computer Science and Artificial Intelligence Laboratory (CSAIL), and his co-authors Rui Ouyang, Branden Romero, and Edward Adelson presented a sharp-tipped robot finger equipped with tactile sensing to meet the challenge of identifying buried objects. “In experiments, the aptly named Digger Finger was able to dig through granular media such as sand and rice, and it correctly sensed the shapes of submerged items it encountered. The researchers say the robot might one day perform various subterranean duties, such as finding buried cables or disarming buried bombs.” (MIT News, 26 May 2021) The article, titled “Digger Finger: GelSight Tactile Sensor forObject Identification Inside Granular Media,” can be accessed at arxiv.org/pdf/2102.10230.pdf.