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  2. Keycard lock - Wikipedia

    en.wikipedia.org/wiki/Keycard_lock

    The card stores a physical or digital pattern that the door mechanism accepts before disengaging the lock. There are several common types of keycards in use, including the mechanical holecard, barcode, magnetic stripe, Wiegand wire embedded cards, smart card (embedded with a read/write electronic microchip), RFID, and NFC proximity cards.

  3. Universal integrated circuit card - Wikipedia

    en.wikipedia.org/wiki/Universal_integrated...

    The universal integrated circuit card (UICC) is the physical smart card (integrated circuit card) used in mobile terminals in 2G , 3G , 4G , and 5G networks. The UICC ensures the integrity and security of all kinds of personal data, and it typically holds a few hundred kilobytes.

  4. Answer to reset - Wikipedia

    en.wikipedia.org/wiki/Answer_to_reset

    An Answer To Reset (ATR) is a message output by a contact Smart Card conforming to ISO/IEC 7816 standards, following electrical reset of the card's chip by a card reader. The ATR conveys information about the communication parameters proposed by the card, and the card's nature and state.

  5. Smart card - Wikipedia

    en.wikipedia.org/wiki/Smart_card

    A smart card (SC), chip card, or integrated circuit card (ICC or IC card), is a card used to control access to a resource. It is typically a plastic credit card-sized card with an embedded integrated circuit (IC) chip. [1] Many smart cards include a pattern of metal contacts to electrically connect to the internal chip.

  6. Personal unblocking key - Wikipedia

    en.wikipedia.org/wiki/Personal_unblocking_key

    If the wrong PIN is entered more than three times, the SIM card will become locked. It can be unlocked by entering the PUK code provided by the mobile service provider, [1] which may be available on the SIM card's packaging, the contract, or provided by customer service after identity verification. After the PUK code is entered, the PIN must be ...

  7. SIM lock - Wikipedia

    en.wikipedia.org/wiki/SIM_lock

    The unlock codes retrieved must be entered into the mobile phone using the keypad. For DCT4 and DCT3 Nokia, unlock codes consist of a "#" key, followed by "pw+", 10 (DCT3) or 15 (DCT4) digits, "+", and another number ranging from 1-7, and finally ends with a "#". Depending on the carrier which the phone is locked to, only some codes will work ...

  8. SIM card - Wikipedia

    en.wikipedia.org/wiki/SIM_card

    The SIM card is a type of smart card, [2] the basis for which is the silicon integrated circuit (IC) chip. [6] The idea of incorporating a silicon IC chip onto a plastic card originates from the late 1960s. [6] Smart cards have since used MOS integrated circuit chips, along with MOS memory technologies such as flash memory and EEPROM ...

  9. Subsidy Password - Wikipedia

    en.wikipedia.org/wiki/Subsidy_Password

    GSM: (SIM unlock) globe smart sun Alltel or Verizon Wireless do not use any type of subsidy locks on their CDMA phones. Default Code:000000 or 123456 or 654321 Prepaid cellphones from Alltel & Verizon Wireless come locked from the store, but Verizon Wireless prepaid cellphones can be unlocked with a call to Verizon.