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  2. RSA blocker tag - Wikipedia

    en.wikipedia.org/wiki/RSA_blocker_tag

    An RSA blocker tag (or RSA tag) is a RFID tag that responds positively to all unauthorized requests, thus blocking some scanners from reading any RFID tags placed nearby. The tags are designed to protect privacy, and are supposedly unable to be used for theft, denials of service, and other malicious uses.

  3. Mobile phone jammer - Wikipedia

    en.wikipedia.org/wiki/Mobile_phone_jammer

    Example of a mobile phone jammer, produced by Jammerspro. A mobile phone jammer or blocker is a device which deliberately transmits signals on the same radio frequencies as mobile phones, disrupting the communication between the phone and the cell-phone base station, effectively disabling mobile phones within the range of the jammer, preventing them from receiving signals and from transmitting ...

  4. RFID skimming - Wikipedia

    en.wikipedia.org/wiki/RFID_skimming

    An RFID blocking card is an RFID-blocking device that operates without a battery by receiving the RFID signal from a card reader or skimmer and it scrambles the RFID ...

  5. AirTag - Wikipedia

    en.wikipedia.org/wiki/AirTag

    AirTags are compatible with any iPhone, iPad, or iPod Touch device capable of running iOS/iPadOS 14.5 or later, including iPhone 6S or later (including iPhone SE 1, 2 and 3). Using the built-in U1 chip on iPhone 11 or later (except iPhone SE models), users can more precisely locate items using ultra-wideband (UWB) technology.

  6. iPhone 12 - Wikipedia

    en.wikipedia.org/wiki/IPhone_12

    The iPhone 12 features a 6.1-inch (155 mm) display [33] with Super Retina XDR OLED technology at a resolution of 2532 × 1170 pixels and a pixel density of about 460 ppi. [34] The iPhone 12 Mini features a 5.4-inch (137 mm) display with the same technology at a resolution of 2340 × 1080 pixels, and a pixel density of about 476 ppi.

  7. Pentalobe screw - Wikipedia

    en.wikipedia.org/wiki/Pentalobe_screw

    Pentalobe screws were first used in the iPhone 4. At first, #00 Phillips screws were used, but later iPhone 4 models had pentalobe screws. [9] The screws used were slightly smaller than a Torx TS1, about 0.8 mm. If brought in to an Apple Store for repair, iPhone 4 models with #00 Phillips screws, if any, were replaced with 0.8 mm pentalobe ...

  8. Electromagnetic shielding - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_shielding

    A conductive enclosure used to block electrostatic fields is also known as a Faraday cage. The amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of holes in a shield to an incident electromagnetic field.

  9. Proximity card - Wikipedia

    en.wikipedia.org/wiki/Proximity_card

    As demand has increased, bit size has increased to continue to provide unique numbers. Often, the first several bits can be made identical; these are called facility or site codes. The idea is that company A has a facility code of xn and a card set of 0001 through 1000 and company B has a facility code of yn and a card set also of 0001 through ...

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