SCIENCE | FACTS | BEYOND | HISTORY | on Instagram: "• Before digital security, identity was physical. • Wax seals were used to authenticate letters and documents. • Each seal carried a unique symbol, crest, or ring imprint. • Only the owner possessed the matching seal — a physical “key.” • Breaking the wax meant the message was compromised. • Intact wax proved authenticity and privacy at once. • Heated wax flowed into tiny grooves, capturing fine details. • These details were nearly impossible t