A sharps protector is formed of a hard, pierce-resistant shell filled with a receptor material. One or two ends of the shell provide entry, and a center or end wall is a pierce-resistant barrier limiting pin push-through. The receptor material is set back at each entry end, thereby establishing a pre-entry pocket that prealigns the pin for accurate entry. Exterior surfaces of the protector are coded to indicate entry positions and barrier positions, using visual or tactile coding. Glow-in-the-dark or reflective material on the surface of the shell aids recovery of dropped protectors.