The PDF file includes:

• Fig. S1. Characterization of the silver porous membrane.
• Fig. S2. Roughness characterization of the electrodeposited silver porous membranes.
• Fig. S3. An optical image of an oil droplet (here, lubricant Krytox 102 obtained from DuPont, USA) spreading on the as-prepared silver porous membrane.
• Fig. S4. Sensing of ethanol.
• Fig. S5. Cyclic voltammetry measurement.
• Fig. S6. XPS characterization.
• Fig. S7. SERS mapping results.
• Fig. S8. No wettability switch was observed on the electrodeposited pure silver nanoparticle film.
• Fig. S9. Design rationale of the electrodeposited membranes with reversibly switching interfacial properties.
• Fig. S10. The effect of the alkyl chain length on the wettability transition performance.
• Fig. S11. Compatibility of the electrodeposition method to the sophisticated micro/nanofabrication techniques.
• Fig. S12. Schematic illustration of the setup used in information encryption application.
• Fig. S13. Creating superhydrophobic tracks on a superhydrophilic silver porous membrane.
• Fig. S14. Droplet transfer.
• Fig. S15. Water harvesting performance on different surfaces.

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Other Supplementary Material for this manuscript includes the following:

• Movie S1 (.mov format). The superhydrophilicity of the as-electrodeposited silver porous membrane.
• Movie S2 (.mov format). The superhydrophobicity of the organic reagent–treated silver porous membrane.
• Movie S3 (.mov format). The repellency of oil droplets of SLIPS 1.
• Movie S4 (.mov format). The repellency of water droplets of SLIPS 2.