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  2. Fingerprint scanner - Wikipedia

    en.wikipedia.org/wiki/Fingerprint_scanner

    The basic function of every type of scanner is to obtain an image of a person's fingerprint and find a match for it in its database. 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 ...

  3. Cellphone surveillance - Wikipedia

    en.wikipedia.org/wiki/Cellphone_surveillance

    Cellphone surveillance. Diagram showing the operation of a StingRay device for cellphone surveillance. Cellphone surveillance (also known as cellphone spying) may involve tracking, bugging, monitoring, eavesdropping, and recording conversations and text messages on mobile phones. [1] It also encompasses the monitoring of people's movements ...

  4. Citizen (app) - Wikipedia

    en.wikipedia.org/wiki/Citizen_(app)

    The app uses radio antennas installed in major cities to monitor 911 communications, with employees filtering the audio to generate alerts. The app is currently available for iOS and Android devices [6] in the United States covering over 60 cities, [7] including New York City , the San Francisco Bay Area , Baltimore , Los Angeles , [8 ...

  5. 10 Receipt Scanner Apps That Reward You for Everyday Shopping

    www.aol.com/best-receipt-scanner-apps-2022...

    10 Best Receipt Scanner Apps for Rewards. Many receipt scanner apps offer reward points and cash-back opportunities. Here are 10 options and what they’re best for. 1. Fetch Rewards: Best for ...

  6. How to turn your smartphone into a flatbed scanner to sign ...

    www.aol.com/news/turn-smartphone-flatbed-scanner...

    You may already use your smartphone to take photos of things like business receipts but you can also use it to digitize text or sign forms.

  7. List of free and open-source Android applications - Wikipedia

    en.wikipedia.org/wiki/List_of_free_and_open...

    Android phones, like this Nexus S running Replicant, allow installation of apps from the Play Store, F-Droid store or directly via APK files.. This is a list of notable applications (apps) that run on the Android platform which meet guidelines for free software and open-source software.

  8. Covert listening device - Wikipedia

    en.wikipedia.org/wiki/Covert_listening_device

    A covert listening device, more commonly known as a bug or a wire, is usually a combination of a miniature radio transmitter with a microphone. The use of bugs, called bugging, or wiretapping is a common technique in surveillance, espionage and police investigations. Self-contained electronic covert listening devices came into common use with ...

  9. Android Team Awareness Kit - Wikipedia

    en.wikipedia.org/wiki/Android_Team_Awareness_Kit

    Android Team Awareness Kit ( ATAK) is an Android smartphone geospatial infrastructure and military situation awareness app. It allows for precision targeting, surrounding land formation intelligence, situational awareness, navigation, and data sharing. This Android app is a part of the larger TAK family of products. [1]

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