Loyalty cards are marketing tools used by businesses to reward repeat customers.
They encourage clients to return by offering points, discounts, or special benefits for continued purchases.
This builds trust and a strong relationship between the business and the customer.
Gift vouchers are promotional tools but do not build long-term trust in the same way.
Credit cards are financial products issued by banks, unrelated to building client loyalty directly.
Bills are transaction records and do not influence trust or repeat visits.
Therefore, loyalty cards are an effective way to build client trust.