1. Loyalty card
Loyalty programs are structured marketing
efforts that reward, and therefore encourage,
loyal buying behavior – behavior which is
potentially beneficial to the firm.
Various loyalty cardsIn marketing generally and
in retailing more specifically, a loyalty card,
rewards card, points card, advantage card, or
club card is a plastic or paper card, visually
similar to a credit card or debit card, that
identifies the card holder as a member in a
loyalty program. Loyalty cards are a system of
the loyalty business model.

2. Fast and Reliable Delivery
• In computer networking, a reliable protocol is one that provides reliability
properties with respect to the delivery of data to the intended
recipient(s), as opposed to an unreliable protocol, which does not provide
notifications to the sender as to the delivery of transmitted data.
• A reliable multicast protocol may ensure reliability on a per-recipient
basis, as well as provide properties that relate the delivery of data to
different recipients, such as e.g. total order, atomicity, or virtual synchrony.
• Reliable protocols typically incur more overhead than unreliable
protocols, and as a result, are slower and less scalable. This often is not an
issue for unicast protocols, but it may be a problem for multicast
protocols.
• TCP, the main protocol used in the Internet today, is a reliable unicast
protocol.
• UDP, often used in computer games or other situations where speed is an
issue and the loss of a little data is not as important because of the
transitory nature of the data, is an unreliable protocol.

3. Customer service
• Customer service is the provision of service to
customers before, during and after a purchase.
According to Turban et al. (2002),[1] "Customer service
is a series of activities designed to enhance the level of
customer satisfaction – that is, the feeling that a
product or service has met the customer expectation."
• The importance of customer service may vary by
product or service, industry and customer. The
perception of success of such interactions will be
dependent on employees "who can adjust themselves
to the personality of the guest,"

4. Warranty
• In contract law, a warranty has various meanings but generally
means a guarantee or promise which provides assurance by one
party to the other party that specific facts or conditions are true or
will happen. This factual guarantee may be enforced regardless of
materiality which allows for a legal remedy if that promise is not
true or followed.
• Although warranties are used in many contractual circumstances,
they are a common feature in consumer law for automobiles or real
estate purchases. For example, new car sales typically include a
factory warranty which guarantees against the malfunction of the
car for a certain time period. In real estate transactions, a general
warranty deed may promise good title to a parcel of land while a
limited warranty provides a limited guarantee of good title.

5. Financing and Hire Purchase
• Hire purchase (abbreviated HP, colloquially sometimes never-never)
is the legal term for a contract, in which persons usually agree to
pay for goods in parts or a percentage at a time. It was developed in
the United Kingdom and can now be found in Australia, China,
India, Jamaica, Japan, Malaysia, New Zealand, and South Africa. It is
also called closed-end leasing. In cases where a buyer cannot afford
to pay the asked price for an item of property as a lump sum but
can afford to pay a percentage as a deposit, a hire-purchase
contract allows the buyer to hire the goods for a not rent. When a
sum equal to the original full price plus interest has been paid in
equal installments, the buyer may then exercise an option to buy
the goods at a predetermined price (usually a nominal sum) or
return the goods to the owner.