Ask your provider for the story. If the card is close to a magnetic field. Communication device with signal waves too much affect the work.The card's data on lost cards.
Ask the provider card. If the card is close to the magnetic field. communication equipment An excessive signal is applied to the operation of the card. Data on the card is lost
Ask the service provider for the cards. If the card is close to the magnetic field communications equipment. With the signal too has to work.Of the card, the card"s data lost.