Accessing your Google account from the web browser on your computer is a bit different than accessing the account from another device such as smartphone. By setting up application specific passwords, you can create unique login passwords for apps and devices, which will be different from your standard Google password that you use to login from your PC.
For example, with application specific passwords enabled, if you access Google from your smartphone, you would sign in to your Google account using a specific password, rather than your regular Google password.
You can enable Application specific passwords on your account from the Google.com/settings/security page via the Authorizing applications and sites link.
"Ways 3. Application Specific Passwords --Secure your Google Account"
Reference : online-tech-tips.com