Private key card e.g. for storing in numbers and passwords, made of plastic and shaped as check card which contains integrated power supply over solar cell and foil battery and IC chip

摘要

The key card is made of plastic and shaped as a check card. The card contains an integrated power supply over solar cell and foil battery and an IC chip. Two foil switches are situated on the card and a display divided into fields indicating numbers (0-9) or letters (A-Z).