From industrial gears to healthcare products to luxury goods, Alitheon’s FeaturePrint provides a link between physical objects and digital traceability without tags, labels, or stickers. (Alitheon Photo) Bellevue, Wash.-based Alitheon raised $8 million in new funding to expand its FeaturePrint technology, which uses optical AI to create a unique digital “fingerprint” for physical objects — no barcodes, tags, or labels required. FeaturePrint work…