Here is what you can do with SignupShield's smart tools
(See also benefits of SignupShield Passwords for the included password manager tool).

Go to a site and sign-in with one click.	SignupShield keeps a list of sites you have sign-in to in the past. Using Password Manager, SignupShield keeps track of accounts, user names, emails and passwords you actually use to sign-in to various sites (only if you want it to). The old way to sign-in to a web site is: entering an address into your browser, waiting for the sign-in (login) form to show up, filling out the user name and password and then clicking on a submit button. Now , with SignupShield's 1-Click Sign-in, you simply select an account from a list and click it.
Detect Phishing Expeditions (Fraud Alert)	When you are about to submit a form containing sensitive personal information to a web site, SignupShield will check out the target web site and alert you if it finds that site to be suspicious.
Spam-proof your email address	When you sign-up to a new Web site, SignupShield can provide you with a unique, disposable, email address to be entered into the sign-up form. With one click, the built-in  Form Filler will fill it in for you. In fact, SignupShield automatically creates a Disposable Email Address, for you each time you need a unique email address. Now, that you have, a large number of email addresses at your disposal, You can block undesirable emails from reaching you by disabling a particular Disposable Email Address.
Shield your passwords and user names	When you sign-up to a new Web site, the Auto Sign-up tool can provide you with unique Password and User Name to be entered into the sign-up form. Of course, you can use the smart  Form Filler to automatically fill it in for you. These Passwords and User Names are unique to each site, thus blocking rogue sites from stealing your identity. Additional and important benefit is that the passwords created by Sign-up Wizard are difficult to guess passwords - a random combination of letters and numbers. see But, you do not have to remeber them, see Password Manager below for more details.
Fill out forms with one or even zero clicks	With a built in Form Filler, SignupShield can help you fill out a complete Web form with one mouse click. You enter your personal information once to SignupShield. Then, when a form is presented from within your browser, SignupShield will pop-up and offer to fill it out for you. You can setup SignupShield to fill a form automatically as it shows up - no questions asked! You may fill a group of forms, a single form or a single field. Form Filler lets you enter multiple addresses (contact, billing, shipping) and multiple payment methods (multiple credit cards, checks etc..)
Have multiple "personalities"	If you are actively using the Internet, no doubt you would want to enter different information to different Web sites. With SignupShield you can define multiple Profiles, each representing a different intended use of the information and each having a complete set of Sign-up, Address and Payment data. (for example: "official", "just looking" etc..)
This is YOUR data	Information you enter, is saved by SignupShield on your computer or on your USB drive in an encrypted Personal Data File. This file's encryption is protected by your own Master Password, known only to you. Thus, you need to remember only one password for all your access needs! If you use more than one computer, you will be delighted to learn that you can now take your Personal Data File with you and use it on any computer where you install SignupShield. When you have a valid SignupShield license, you are allowed to install the product on as many computers as you want, provided that all installations start from your account on our Web site.

Still not sure? read more here.