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2. Screen protector - Wikipedia

   en.wikipedia.org/wiki/Screen_protector

   The first screen protector was designed and patented by Herbert Schlegel in 1968 for use on television screens. [1] In 1990s, the CRT screen protectors were used on CRT monitors for anti-glare and anti-radiation purposes. [citation needed] Later, they were adapted for use on LCD monitors.

3. Smudge attack - Wikipedia

   en.wikipedia.org/wiki/Smudge_attack

   With this research, various anti-smudge screen protectors have been put on the market such as Tech Armor's anti-glare and anti-fingerprint film screen protector and ZAGG's InvisibleShield Premium Film and Glass Elite (tempered glass) antimicrobial screen protectors.

4. Fingerprint scanner - Wikipedia

   en.wikipedia.org/wiki/Fingerprint_scanner

   The measure of the fingerprint image quality is in dots per inch (DPI). [8] Optical scanners take a visual image of the fingerprint using a digital camera. Capacitive or CMOS scanners use capacitors and thus electric current to form an image of the fingerprint. This type of scanner tends to excel in terms of precision.

5. Use Face, Fingerprint or PIN to sign in to AOL

   help.aol.com/articles/use-face-fingerprint-or...

   Use Face, Fingerprint or PIN to sign in to AOL Entering a password to sign in to your AOL account can sometimes feel like a hassle, especially if you forget it. If your smart device is enabled with biometric authenticators like a fingerprint sensor or facial recognition technology, you can sign in with ease.

6. Fingerprint Cards - Wikipedia

   en.wikipedia.org/wiki/Fingerprint_Cards

   The swipe fingerprint sensor uses 3D sensing technology to image a high-resolution 3D picture of the fingerprint. Rolling or pressing the finger against a sensor can cause inconsistencies because the skin deforms when being pressed against the sensor. 3D touch-less fingerprint scanners can overcome these problems for a faster and more ...

7. Biometric device - Wikipedia

   en.wikipedia.org/wiki/Biometric_device

   Fingerprint sensors can be found on mobile devices. The fingerprint sensor is used to unlock the device and authorize actions, like money and file transfers, for example. It can be used to prevent a device from being used by an unauthorized person. It is also used in attendance in number of colleges and universities.