Design a single mobile app icon for the App Type, centered on a square 1:1 canvas. Use the Icon Concept as one bold, simple symbol with a strong silhouette, crisp edges, comfortable padding and smart negative space so it reads instantly at small sizes. Render it in the Icon Style, using the Color Palette with strong contrast between the symbol and its background. Present the icon as a smooth iOS-style rounded square with subtle color treatment, centered on a plain very light neutral background and occupying about 70 percent of the canvas width. Add a soft, subtle drop shadow beneath the icon. Keep the design clever, original and iconographic rather than a detailed scene or illustration. Show no device, hands, mockup, extra objects, text outside the icon, thin hairlines, tiny details, sparkles, glow, lens flares, photographic textures, random letters, copied branding or watermarks.
Use these details:
App Type: "Smart lock app"
Icon Concept: "A padlock with a Wi-Fi arc forming the shackle"
Icon Style: "Flat illustration"
Color Palette: "Navy and lime"
Using your own logo, product or face? Attach it in the chat and say which of the details it replaces.
Your result will come out close to the example rather than identical to it. Change the details to make it yours.