Fingerprints recognition on Smartphone

GCIT 1015 IT INNOVATIONS SHAPING OUR WORLD

16215532 LAM HO WAH GORDON

16220757 CHENG NGA MAN

16222504 YEUNG, ELAINE YU PING

16222598 TANG CHUN YI KELLY

26 October ,2016

Contents

Introduction of fingerprints recognition

Applications Advantages & disadvantages Survey Results

Future development and

conclusion

Background

▶ Fingerprint identification is one of the most well-known and publicized biometrics. 

▶ As fingerprints offer a reliable means of personal identification , they have been used for identification for over a century.

▶ And this technology is used in the mobile phone since 2007,by Toshiba.

Principle▶ Capacitive fingerprint scanners are the type mostly used in

smartphones. They work properly if the distance is short enough so that electricity can be transferred from the capacitors and the skin

▶ Fingerprint is unique and full of ridges and valleys. Ridges are closer to the capacitor, and more electricity will flow away. Your fingerprint can be read by the sensor due to this characteristic.

Type

▶ There are mainly two types of fingerprint recognition on smartphone. They are swipe-style and one-touch/press style respectively.

▶Swipe-styleDuring movement of the finger the electrical field will change dependent on the distance between the sensor surface and the ridges and valleys of the fingerprint.

Video clip - Swipe style fingerprint recognition

Type

▶ One-touch/press styleWith just a touch or a press of your device's Home button, the sensor quickly reads your fingerprint and automatically unlocks your phone.

Video clip - One-touch/ press style

Components▶ As shown in the diagram, each sensor

consists of arrays of cells. These cells have two conductor plates, which are covered with an insulating layer. Thus, they form a simple capacitor which is used to store the charge.These sensors will then be connected to an integrator. The output of the integrator will be given to the input of an inverting operational amplifier. This op-amp will consist of hundreds of transistors, resistors and capacitors. This op-amp is alters the input voltage with respect to the reference voltage provided to the other input. The non-inverting input is connected to the ground. The inverting input is given to the reference voltage and then to the feedback circuit. This feedback circuit is given to the amplifier output and also includes the two conductor plates.

 Applications and examples

▶1.Unlock the mobileSince everyone has unique fingerprint, it can be served as a personal identification in the fingerprint recognition. People can unlock the phone by putting the finger on Home button or swipe the finger from top to bottom of the sensor.It enhances the security of the mobile phones.

▶2. Purchase in App storesPeople now make payment while purchase applications in the App Store on their iPhones and iPads and they are able to authorize Play Store purchases with the fingerprint. This help them save time when online shopping.

▶ 3.BankingMost banking apps have started integrating the fingerprint sensor, so we can make transactions with a tap to the sensor.

 Applications and examples

▶ 4. Use Home Button Without Pressing the ButtonWe can use the fingerprint sensor as an alternative for capacitive touch button, you can install and use the app easyHome for Samsung from the Play Store.

▶ 5.Auto Login to WebsitesThe fingerprint sensor can act as a second layer of security while filling out the credentials. Every time people log on requires the saved credentials, they will be auto-logged into the website after the verification.

Advantages 1) Convenient▶ It is convenient to use fingerprint recognition as it can be an alternative

to your password for online payment, simplifying the process of purchasing online, or for locking and unlocking the devices, and we can remember fewer passwords. For example, apple pay, you can use your fingerprint to make the payment and you can buy apps, videos and musics on ITunes.

2) Secure▶ It is secure to use fingerprint for recognition on smartphones because

human fingerprint contain unique whorls and ridges that would be difficult to be duplicate and counterfeited.

Disadvantages1) Sensitivity▶ The device should be clean enough to facilitate effective scanning. The

scanner can be easily contaminated by dust or oil on our hands and lose its accuracy. Also, the moisture on the home button or our fingertips can keep our fingerprints from being registered.

2) May cause security problem toward the endpoint data protection▶ devices using fingerprint for recognition may do not utilize a password

to lock their hardware. This can present a considerable threat to to endpoint data protection. For example if an individual’s unlocked device is lost or stolen, hackers have easy access to any sensitive content contain there.

Online Survey

▶Target Audience: general public▶Information: Fingerprints recognition on Smartphone▶Website: https://goo.gl/forms/jfGgHOU8LbinVfgI3

Survey Results

▶ Most people think that it is convenient and intelligent. ▶ A minority of people

think that it maybe not sensitive enough or troublesome.

Survey Results

▶A majority of people have experiences on using this technology, it shows that this technology has high popularity.

Survey Results▶Many people agree that

this technology is convenient and secure enough after using it.▶But a minority of people

think that it may esay to have technical problems.

Survey Results

▶A majority of people think the sensibility of the technology still have the room of improvement.

Further development & Conclusion▶ According to a market research from IHS, approximately 50% of

smartphones sold by 2019 are expected to integrate an embedded fingerprint sensor. As we can see, inevitably, smartphone with fingerprint recognition will become dominant in the future.

▶ Although there are some concerns about the insecurity and inconvenience of the fingerprint recognition technology , we all believe that it can be improved regarding the breakthrough in science and technology. Fingerprint recognition, expectedly, will be used for other purposes and beneficial to our daily life.

The End