Description at manufactures site:
Say goodbye to password hassles—now you can log on to your computer and your favorite Web sites with your fingerprint. The Microsoft® Fingerprint Reader lets you replace all those usernames and passwords* with something much easier to remember: the tip of your finger. The Fingerprint Reader is integrated into some of Microsoft’s latest keyboard and mouse products, and also sold separately.

Description by author:
Get yourself at a total comfort, now no worry to remember lots of passwords. Even the windows login password. It can handle application passwords, websites passwords, windows login password & much more. It comes as seperate device, inbuilt in laptops, keyboards,etc.

What is fingerprint reader:
It is a device which reads the user fingerprint & recognizes the user. Then it finds the password stored by user in its application. The password is then entered in the field.

Compatibility:
MFR is compatible with most of the popular operating systems today.

Accuracy:
MFR offers great accuracy. Its the right time for you to buy.

Manufacturer:
Microsoft Corp.®

Price:
You may find the prize on eBay near 35$-45$.