Online (Internet) Banking.

Online banking allows customers use their banking accounts online.
Many things can be done online:

• Funds transfer (between two personal accounts or to another persons accounts).
• Investment (Buying or selling).
• Bank statements.
• Support and help from bank services.

For security: A PIN number is required, the PIN number represents a password. Also TAN numbers are required to provide an identity to each transaction.
Some advantages of  online banking are:

• Very convenient - All the services needed are provided.
• Very fast - It is much quicker than  going to a local bank to make transactions.
• Very easy - There is usually a step by step process.

Some disadvantages of online banking are:

• Lack of trust - some people believe they have done the wrong things.
• New technology - some people may not know how to properly use the internet and use it safely.

Source: http://en.wikipedia.org/wiki/Online_banking
http://www.buzzle.com/articles/advantages-and-disadvantages-of-online-banking-services.html