Paste Lock
2007
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Biometric Locks Mysteries, What Is FAR/FMR? by Rose Li
If you have seen movies where the bad guysâ" or sometimes even the good guys! â"must break into a secure facility by impersonating another personâs fingerprints or voice, then you are already familiar with biometric locks.
Biometric fingerprint door locks are ways of using unique physiological characteristics to determine who has access to a certain place.
While the systems in movies seem nearly foolproof which forcing characters to resort to creative and sometimes gruesome methods to trick them, real systems are not infallible.
False Positives
When working properly, biometric devices are much more reliable than password based security such as keypads with personal identification numbers. However, there is always the possibility that a biometric system will incorrectly match the input (voice, facial structure, fingerprint, etc) with that which is stored in the database.
The probably that this will happen is known as false accept rate (FAR) or false match rate (FMR).
These ratios are calculated by dividing the number of false acceptances by the total number of attempts.
For example, a system which has registers 10 total attempts, 5 of which were false matches, has a FAR/FMR of 50% (5 / 10 = .5).
No one wants a system which can be easily compromised. For this reason, you might be curious what the cause of a false acceptance or match is.
These false positives can usually be attributed to faulty hardware or software such as cheap sensors in the machine or poorly written code.
A false match is not necessarily alarming.
In fact, while a false match might be highly improbable, it is always possible. Of course, if you control access to something with a biometric device, you want the FAR or FMR to be a close to zero as possible.
A false match rate of 1% is usually considered acceptable.
What This Means To You
If you are new to the market of biometric locks, make sure to do your research first. It can be helpful to find first-hand experience (reviews) from people who have already used the equipment you are considering. This can give you a realistic idea of how reliable biometric devices are.
In addition to this, look for false accept rates in product descriptions. The rate will be described as â
Why isnt my Toshiba laptop copying and pasting any files or documents?
Am finding it very hard to copy and paste documents on my Toshiba Laptop.
Even if i had saved them on the desktop or in any other folder.
The right click mouse button does accept and shows you all the options, however it doesnt do as instructed or expected.
Could it be a copy and paste lock that doesnt allow it?
How can i cancel or stop that?
Or whats the cause of this?
it may need repair, but many times temp files get full. and running disk clean may help.
