En op de "calibration target" van een instrument (Sherloc) van Perseverance is een geocaching trackable code geprint. Zodra er foto's van dit plaatje online komen kunnen geocachers de trackable loggen.
"The trackable code is specially printed on a one-inch, unique, glass disk that is part of the rover’s calibration target. Cameras and other tools on the rover use calibration targets to determine accurate colors, brightness, focus, and other information. This calibration target is specifically for the SHERLOC’s WATSON camera. The SHERLOC instrument is a spectrometer on the rover’s arm that uses laser light to classify minerals and look for organic compounds. WATSON, its sidekick camera system, is used for engineering, operations and science imaging on the surface of Mars."
https://coord.info/TB5EFXK