Security Labels Tamper Evidence/Security Security labels are often used as a visible indicator that a product has been tampered with.   For more sophisticated applications security features may include heat sensitive print, holograms, multi-tone colours and material or print with a hidden message. Holograms Holograms are becoming used more frequently to add extra value to labels by giving greater shelf impact. Holograms can also be used for anti-counterfeiting and other low level security systems.