Adhesive-backed pockets designed to affix to the rear of a mobile device, providing a secure place to store identification cards, credit cards, or transit passes. Typically constructed from transparent plastic or silicone, these accessories allow for the contents to be readily visible without removal. For example, an individual might use one to keep their driver’s license and a debit card easily accessible when traveling light.
These accessories enhance convenience by consolidating essential items with a commonly carried electronic device. The utility extends to minimizing the need for a separate wallet or purse, streamlining daily routines, and reducing the risk of misplacing essential cards. The concept evolved from the desire for minimalist carrying solutions, gaining popularity alongside the increasing reliance on smartphones for daily tasks.