Are gateways are useful?

Question

Are gateways are useful?

Answer 1

yes they are very useful also it depends upon in which field you are talking. We have different types of gateway for different application likew where ever you hear the name gateway, assume that we are talking about external connectivity. SMS gateway is used to provide SMS connectivity to third parties or solve protocol incompatibilities than we have payment gateway which is :

Payment Gateway refers to an e-commerce service that authorizes payments for e-businesses & online retailers. It in a way represents a physical POS (Point-of-sale) terminal located in most retail outlets. Payment gateways encrypt sensitive information, such as credit card numbers, to ensure that information passes securely between the customer and the merchant.

Than we have internet gateway for network connections.

  

Answer 2

yes, without them I'd be stuck in one room. Now i can move from room to room.

Perhaps you want to elaborate on your question?

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Answer 3

Nope..... are in not useful are in with without which haveing to include within are.