Arduino to help log in to website automatically with thump print security

Hi,
Im working on the project where i want my Arduino (galileo) to interact with browser and help me to log in automatically .
It keeps username and password for all my favorite web site such as facebook,yahoo mail,bank accounts and help me log in when i visit these sites.
For security features i will attach thumb print sensor and my arduino only will interact with my PC (ethernet connection) once thumb print verified.
Can anyone help me with the coding or is there any library i can refer with ?