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Hand Geometry

Learn about hand geometry as a biometric verification method, exploring how it works, equipment needed, pros and cons, and its widespread use in various sectors. This technology identifies users based on hand shape measurements, enhancing security measures.

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Hand Geometry

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  1. Hand Geometry By: Kieran Hepworth

  2. Table of Contents • Definition...................................Slide 3 • How it Works.............................Slides 4 – 6 • Equipment.................................Slide 7 • Pros...........................................Slide 8 • Cons..........................................Slide 9 • Use of Hand Geometry..............Slide 10 • Video…......................................Slide 11

  3. Definition • Hand geometry-a biometric that identifies users by the shape of their hands. • It uses the measurements of the hand in order to determine if the hand is a match or not. • Can use finger length, thickness, and curvature. • Only for the purposes of verification, not identification.

  4. How it Works • In a broad sense, hand geometry readers measure a user's hand along many dimensions and compare those measurements to measurements stored in a file. • This is done by using a series of algorithms to determine the measurements of the hand.

  5. How it Works (cont’d) • Assuming that there is already images of the hand on file, these are the steps taken in hand geometry • Step 1: Hand is placed on plate with hand in right position between 6 pins and an image is taken • Step 2: A median filter is applied to the image • Step 3: Necessary features for comparison are extracted

  6. How it Works (cont’d) • Step 4: Difference between sample and template is calculated for each feature • Step 5: Person with smallest “absolute difference” in feature is identified • Step 6: Step 5 is repeated for all 5 features • Step 7: Person with largest number of features is identified as a match • Step 8: Results are displayed

  7. Equipment • Scanner • Pins • Screen • Punch keys (if desired) • Swipe (if desired)

  8. Pros • Requires little memory • Less invasion of privacy (people more comfortable with system) • Can easily be coupled with other systems for identification

  9. Cons • Not distinctive • Can only be used for verification • Many hands are very similar in shape and size, system may confuse someone else’s hand for yours • Would have to be combined with another system in order for complete identification • System can be very expensive • Training required

  10. Use of Hand Geometry • Hand geometry is widely used throughout the world • It is used for verification, not identification • The hand geometry system is coupled with ID scanning to verify who is entering • It is not widely used in airports but has been taken advantage of by different companies for their buildings and even government agencies

  11. Video • http://video.search.yahoo.com/video/play?n=21&ei=utf-8&vm=r&fr=yfp-t-701&fr2=sg-gac&tnr=21&sado=1&p=hand+geometry+scanning&vid=854492315917&dt=30140788&l=82&turl=http%3A%2F%2Fts2.mm.bing.net%2Fvideos%2Fthumbnail.aspx%3Fq%3D854492315917%26id%3D9c2625c10b3f1100369f98552b5d1c57%26bid%3D5Ur45UyVE%252bSAgA%26bn%3DThumb%26url%3Dhttp%253a%252f%252fwww.inceptiontechnologies.com%252fVideos%252fhandreader.wmv&rurl=http%3A%2F%2Fwww.inceptiontechnologies.com%2FQSR%2520Page%2FQSR.html&tit=Inception++Technologies++-+Quick++Service++Restaura...&sigr=11oe87ept&newfp=1

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