Flash cards are designed with Flash technology. Flash cards are non-volatile storage solutions that do not require a battery to retain data indefinitely. They retain all the information even when the power is turned off completely.Flash cards are solid-state, meaning they contain no moving parts and provide users with much greater protection of their data than conventional magnetic disk drives. They also offer high tolerance to shock and vibration, fast read / write speeds, low power-on current consumption, compatibility, temperature resistance, and are the ideal memory storage that optimize density and non-volatility.