  We present emergent mechanical memory storage behavior in soft cellular
materials. The cellular materials are a network of soft hyperelastic rods which
store shape changes, specifically local indentation. This happens under an
applied global compressive strain on the material. The material transits under
strain from an elastic state (capable of `forgetting' any applied indentation
after un-indentation) to plastic state (indefinitely storing the shape change
due to indentation). The memory can be erased via removal of applied global
strains and is therefore re-programmable. We characterise this behaviour
experimentally and present a simple model that makes use of friction for
understanding this behavior.
