Improved feedback prodders inform deminers of the amount of force exerted and alert them when the prodder’s angle approached or exceeds the 30 degree limit.
"Feedback Prodders: A Training Tool to Improve Deminer Safety,"
Journal of Conventional Weapons Destruction: Vol. 5
, Article 29.
Available at: http://commons.lib.jmu.edu/cisr-journal/vol5/iss2/29