This is a good price for this, they usually sell for around the £30 mark, and there's only a few cheaper @ double this price with postage (Amazon asking £32). There's also 4% cashback through quidco.
The HP USB Biometric Fingerprint Reader lets users replace cumbersome password access to their networks and computers with a single swipe of the finger. By using fingerprints to establish identity and by eliminating the expense of maintaining passwords, this standalone, plug-and-play fingerprint reader improves computing security while reducing its operating cost.
The HP USB Biometric Fingerprint Reader is fast, verifying user identity in less than one second. The Fingerprint Reader is compatible and fully integrated with the award-winning HP ProtectTools Security Software with HP Credential Manager for ProtectTools, for controlling access to PCs and networking environments. The software includes smart card, security tokens and many other supported devices for multifactor authentication as well as single sign-on capabilities.
USB - 4 PIN USB Connection
500 dpi resolution
AuthenTec Biometric Sensor