Yes if you have a usb cord
There are a wide variety of fingerprint scanners available for your laptop. There are high quality fingerprint scanners to look at and compare at www.staples.com.
there are many laptops with fingerprint scanners are available in the market.UPEK Eikon TCRD4 USB Fingerprint Reader - 1 x USB - Finger Print Reader is the example of such kind of laptop.HP Business Elitebook 8560P 15.6" Notebook is another example of such kind of laptops.
Officemax.com and bestbuy.com are good websites that you can go to for scanners for your laptop. Normally, there are good sales and coupons that you can use to buy it too.
To explain how brain scanners work
Flatbed scanners work on almost the same principles as copiers.
How do lasers work
A cordless scanners works like how a cellphone or a regular cordless phone works. There are electrical signals that are connected between the scanners and the device you are using.
If you go to circuit city you can buy a scanner for your laptop, they have everything electronic in the store at a good price compared to other stores.
To the best of my knowledge, all regular scanners can work as a photo scanner. However, if you are into photography, a specifically designed photo scanner may be best for you.
Yes it does.
you eat it
Any scanners that are supported by SANE ("Scanner Access Now Easy") will work in Ubuntu. Note that you will need to add yourself to the "scanners" groupand log out and back in. A link in the "Related links" section below will show a list of supported models of scanner by manufacturer.