Programs melanocyte cells to produce permanent, complex patterns in the skin — geometric designs, text, images, or abstract art rendered in natural pigment rather than ink. Unlike traditional tattoos, geneprints are produced by the body itself and heal cleanly without scarring. Advanced versions from Lacuna Genomics can produce patterns that shift slowly over days or weeks, creating living art that evolves. The most expensive installations include bioluminescent elements that glow in darkness. Street clinics offer static geneprints for less than the cost of a meal. The technology has essentially replaced traditional tattooing in GLMZ, though some purists insist on needle-and-ink work as a statement of authenticity. Geneprints can encode information — some residents carry their medical records, identity codes, or sentimental messages written in their skin.