A device, typically adhesive-backed, affixed to the back of a mobile telephone to securely store identification, payment, or access cards. Its color is characterized by the absence of hue and maximum lightness, creating a neutral aesthetic. For instance, one might utilize it to carry a driver’s license and a credit card, consolidating essential items and reducing the need for a separate wallet.
The utility of these items lies in their convenience and space-saving design. They provide a readily accessible storage solution for commonly used cards, promoting efficiency in daily transactions and minimizing bulk. Historically, individuals carried wallets or separate card cases; the advent of this integrated accessory reflects a trend toward streamlining personal belongings and leveraging the ubiquity of mobile phones.