Thursday, July 3, 2014

How to Pair a Bluetooth Mobile Cell Phone

Pairing a Bluetooth Device
The so-called pairing to two Bluetooth devices can be an important mechanism in protecting the security of shared data. Bluetooth has a naturally safe security system and pairing manages to combine convenience with safety. It is possible to share basic information between two Bluetooth devices without pairing them, but pairing creates a trusted connection between Bluetooth-enabled devices, allowing users of each device to easily and securely share information, data and services.
How does pairing work?
Pairing is initiated by the two devices learning a shared secret, in this case known as they passkey. By simultaneously entering the same passkey into both devices, the trusted machines can cryptographically authenticate each other's identity. Once this has been completed, these paired devices code or encrypt the data that is shared between them. This common encryption is followed and understood by both Bluetooth-enabled machines and thus allows each to communicate with one another very easily, whilst ensuring that no external devices can eavesdrop. Pairing is done from between devices, as opposed to between two Bluetooth chips. This means that pairing is remembered and preserved even if Bluetooth names are changed.
Discovery Channel
The first thing to note in trying to pair together your Bluetooth devices, is that for this procedure to be possible, it is necessary to first ensure that they are on the correct settings. One of the devices must be discoverable and the other must be in it's discover mode. This can usually be done fairly straightforwardly via menu settings.
PASSKEY entry and pairing
Once the Bluetooth devices are within a close enough range and have discovered one another, users will usually be asked at some point to enter a passkey. Most devices do not have a pre-set, fixed passkey and to pair, it is only important that the same passkey is entered into both Bluetooth devices. The passkey, which can be up to 16 characters, is only entered once and therefore does not need to be remembered. Entering this common secret passkey allows the devices to acknowledge the security of the connection and start pairing. Some devices do have set passkeys, however, which must be known and entered correctly to pair.
If this has been done correctly and the instructions that relate to the specific devices the user wishes to pair have been followed, the devices will be paired. Different machines have slightly different icons and buttons to press to finish the pairing procedure, but it is usually straightforward and simple to follow. On successfully pairing, a notification of some sort will alert the user to inform them that now these two devices can quickly and safely share information and services.
Once pairing is complete, it will be possible to connect, via Bluetooth, to the device whenever desired. Pairing codes the communication of data, using a unique link key which is exchanged every time the two devices connect. Pairing only has to be done a single time between the same two devices and remains even when one of the devices is switched off, if they both reboot or connection is interrupted.

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