SkimDefend-LogoA free app can help store owners keep track of gas-pump security stickers to help stop skimmers.

The app, available from the National Association of Convenience Stores for Apple and Android devices, can be used to scan or track the codes on NACS WeCare decals that show whether a gas pump has been opened. By tracking the decals, retailers know whether a pump may have had a credit-card-skimming device installed.

SkimDefend is free; NACS sells the WeCare decals. Learn more here.