![]() For the simple case of a peripheral device which is paired and will always be used only with the one particular host device, there should never normally be a need to manually connect, because the pairing information will ensure they automatically connect. Nonetheless, devices such as phones or laptops include a Bluetooth menu allowing you to manually disconnect from, or attempt a connection to, a given Bluetooth device that's in range. In practice, many Bluetooth devices will automatically connect with any paired device as soon as it is switched on and in range, removing the need for manual connection. To connect, the Bluetooth devices must be in signal range with each other and one must initiate a connection with the other. To enable two Bluetooth devices to communicate with each other, the devices need to be connected. ![]() What is connecting and how is it different to pairing? It should be noted that even though almost all devices can store several pairings, they can't necessarily connect to more than one of these at once. For high powered devices like smartphones this table is essentially unlimited, while smaller Bluetooth devices may only allow around 6, 8, or some other small number of pairings. How many devices can be paired to one device?īluetooth devices store pairing information in a pairing table and the number of devices it can simulteously store pairing informaiton for is limited by the number of entries in this table. The pairing process means that a stranger should not be able to connect to your Bluetooth device simply by being within signal range, because their device won't have been paired by you. In practice, this usually means going into the Bluetooth devices menu on devices with a screen, or entering a "pairing mode" on devices without a screen, then initiating pairing on one device and accepting it on the other. Two devices are only supposed to be able to pair if the owner of the devices has both devices present at once and confirms the pairing. Pairing information is stored on both devices, and remembered even after turning them off and on again, so that next time they are in range of each other they can find each other and know that it's safe to connect. When two Bluetooth devices are "paired" it means both devices "remember" each other, storing the other's unique codes in its own table of pairings so that the other device can be uniquely identified as being a device it is "safe" to connect to. Devices which require high-speed network access can now include their own Wi-fi functionality instead should that be desired.Īdvertisements What is Bluetooth pairing?īluetooth pairing is a two-way, permanent association between two Bluetooth devices. Since Bluetooth version 4.0, a new feature called Bluetooth LE (Low Energy) enables some types of Bluetooth devices to run on even smaller amounts of power or last for a much longer time on a single set of batteries.Īs a result, Bluetooth is not intended for communicating large amounts of data, like Wi-fi is. ![]() ![]() It was designed with small battery-powered devices in mind such as computer mice and keyboards. While Bluetooth can in cases communicate over longer distances, reliability of communication typically drops off after distances of over 10m / 30ft in open space, and more quickly if it has to travel through objects such as walls, furniture or even the human body.īluetooth also uses less power than Wifi. This "short distance" is key to understanding where Bluetooth fits in the scheme of wireless protocols - it's designed for covering smaller smaller areas that Wi-fi does, such as "in the same room", "on the same desk" or even "worn on the same person". What is Bluetooth?īluetooth is a type of wireless communication for use over short distances between devices. This article will attempt to explain in simple terms how Bluetooth pairing works and what some of the biggest misconceptions about it are. Pairing and using Bluetooth devices isn't as complicated as some make it out to be.
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