White Papers Benefits of Membership Cards Membership cards serve as a vital marketing tool that is great for a company looking to garner repeat business and increase customer loyalty. Why ID Cards are so important? Whether you are an employee working for a big firm or a student at a local university, ID card is that one thing you are obligated to carry with you at all times. But, why? Barcode or Magnetic Stripe? Having trouble deciding between barcode and magnetic stripe? Have not the faintest inkling of what their differences are?