"Design a futuristic smart adhesive spray device for non-lethal self-defense, named *'SKA Smart Spray'*. The device should have an ergonomic and compact design, easy to carry and use. It emits a dense, bright yellow liquid that adheres to surfaces within seconds and solidifies temporarily. The spray uses a sleek cylindrical body with smooth contours, made from lightweight, durable materials. Highlight a digital display or smart indicator that shows the remaining fluid level and operational status. Add a protective cap with a secure locking mechanism and a nozzle designed for precise application. The branding *'SKA'* should be subtly engraved in a modern, high-tech font. The setting is practical, emphasizing functionality while maintaining an aesthetic appeal for urban users."