Teamviewer is a remote assistance software created by a company with the same name and it is free for home users.
It allows users to securely remotely control a computer and is vastly used in the IT business to service customers remotely.
How To Use It
The image below shows the app window. On the left side (1) shows your
Computer ID and temporary
Password. By providing this information to your I.T. support he'll be able to connect to your computer and perform the necessary services, remotely.
The password is temporary, which means everytime you close and re-open the app the password will change. This is a security feature, and it is good.
The right-side of the app (2) is used by the person who is connecting to a remove computer.