How a Fingerprint Reader Works

Has this ever happened to you?  YouSince each set of fingerprints in developed in its
haven’t been to a website in a few weeksown way through thousands if not millions of
and you just can’t remember the passwordenvironmental factors there is almost no chance
and now you have to go back through your emailthat anyone has, has ever had or will ever had
and fish it out.  Or, do you do this major no nothe same fingerprint as you; even if you are an
of  security?  Use the same username andidentical twin.
password for every website and application youSo now the fingerprint reader just has to scan
can.your finger and make sure all the ridges match,
It’s time you tried a password storing fingersounds easy right?  Well, it does take a quite of
print reader.  Basically all consumer finger printbit of technology to actually make it work.  First
readers work the same; you install the softwarethe scanner uses either an optical or capacitance
and connect the fingerprint device.  You thenscanner to take a “picture” of your finger
install the fingerprint reader into an available USBusing either light or electricity respectably. 
port, scan your finger (usually the right indexThey then “read” if what it’s looking
finger), and now as you surf  the web theat is a ridge or valley and uses your computers
software will ask you if you want to store theprocessing power to compare the captured
user id and password associated with that site.fingerprint with the fingerprints on file, from setup,
Now the fun part, once you visit that site again inin your system.  They do this by using very
the future all you need to do is place your fingercomplex algorithms and focusing in on the very
on the reader and it fills in those pesky user idfine parts of your actual fingerprint and comparing
and password fields for you.  No need to everspecific features called minutiae. 
forget or use the same password again.The scanner doesn’t take your whole
So how does this all work? fingerprint into account when making a match; it
Before we start it’s good to know that thisjust has to find some parts that match both the
technology exists because we all have our ownminutiae and the record of your print on file. 
uniquely identifiable piece of information, our fingerOnce the threshold of matches is reached voila
prints.  While our forerunners did not develop thisyou have access to that password protected
adaptation for password protection, more forpage you wanted and you didn’t even have
gripping and holding, it’s a nice side effect. to think about it.