Keying your pin number in reverse

Misleading ATM personal safety information - CriminalFraud

When a lock is bumped, force is applied to a "bump key" to drive the bottom and top pins up in the pin chamber. When the top pins contact the tip of the pin chamber, they create an impact that causes the bottom pins to separate and travel downward. When the gap between the top and bottom pins crosses the shear line, the slight torque applied to the key causes the plug to rotate — and the lock to open. ASTM International has developed testing criteria for determining a cylinder's ability to effectively resist break-ins using lock bumping techniques.

Credit card and debit card fraud

The revised standard is used to test and compare pin tumbler cylinders commonly used in padlocks. In these tests, locks from Master Lock exceed Grade 6 lock bump test criteria. This is due to these locks' reverse rake tapered driver pin, high performance spring and precision tolerance chamber.

Chip and signature

The multimode versions have flat ferrules but the singlemode versions have angled ferrules at the same 8 degree angle used on regular single fiber APC connectors. To further complicate the variations on MPO connectors, there appears to be no standard on the orientation of the angled surface - it can be toward the key or away from the key.


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Check before you mate. Anyway, these variations create a very difficult situation for users who are forced to specify the exact configuration of each cable and connector. Panduit with the PanMPO shown above and several other manufacturers have faced this issue and produced a connector that allows changing both pin and key configurations with a simple tool.

Do not type your PIN in reverse at an ATM

This connector is highly recommended, especially for test reference cables where one may encounter many different configurations. MPO-MPO cables are used as backbone cables in prefab or parallel cable systems and patchcords in parallel optics transmission systems. Breakout cables can be plain for use in testing or in modules Corning module shown below for use in prefab cabling. In all diagrams, we note the pins at the interface.

Contactless

Breakout modules with single fiber connectors on one end and MPOs on the other end will generally have pin connectors inside mating adapters. In parallel cable systems, generally the cable in the middle is the permanently installed cable and will have pins and be terminated in a mating adapter, forming a jack for the no-pin patchcords. The only way to figure out what you have is to use the manufacturer's documentation since you cannot inspect inside the modules or cables for color codes.


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  • Do not type your PIN in reverse at an ATM;
  • And here is a similar drawing of a prefab cabling system using MPO connectors throughout to connect to a transceiver for parallel optics transmission. Generally, the backbone cable that is permanently installed will end in connectors with pins inside mating adapters, effectively creating a "socket" type connection. Patchcords will have no pins since they are subject to damage because they simply protrude from the connector.

    MTL 05 pin in pin reverse profile

    Transceivers will be set up as jacks also, with pins inside the transceiver socket. Transmit Pin. Receive Pin.

    Channel 1. Channel 2. Channel 3.