Tactile sensing is a technique where objects are brought into contact with a tactile sensing surface and an electrical signal is generated by the interaction. The signal is then processed to extract information about the way the object "feels". In particular with cranberries the softness or loss of rigidity is indicative of decay.

Traditional Bailey Mills use a bounce and hurdle test to remove berries which have lost their elasticity, however many soft cranberries retain their elasticity and still bounce well. Our tactile sensors measure each berry's elasticity and rigidity simultaneously to remove spoiled fruit.