Wireless is always less secure than wired communication. Remember how old spy films used to show secret agents The Bluetooth SIG released the Bluetooth Core Specification Version 5.4 on 7 February 2023. This new version adds the following features: [128] A smart meter mounted on sheet metal or a metal wall will not be able to send radiation through the sheet metal, so it will also need a directional antenna type to get maximum range in the field of view. Antenna efficiency is a key indicator that determines the emissivity of an antenna.It specifies how much energy will be lost during the energy exchange. The greater the efficiency, the better the antenna is. Generally, a value greater than 40% indicates acceptable performance.

Vosi needed a means for the system to communicate without a wired connection from the vehicle to the other devices in the network. Bluetooth was chosen, since Wi-Fi was not yet readily available or supported in the public market. Vosi had begun to develop the Vosi Cello integrated vehicular system and some other internet connected devices, one of which was intended to be a table-top device named the Vosi Symphony, networked with Bluetooth. Through the negotiations with Motorola, Vosi introduced and disclosed its intent to integrate Bluetooth in its devices. In the early 2000s a legal battle [22] ensued between Vosi and Motorola, which indefinitely suspended release of the devices. Later, Motorola implemented it in their devices which initiated the significant propagation of Bluetooth in the public market due to its large market share at the time. Numeric input devices: Mobile phones are classic examples of these devices. They allow a user to enter a numeric value up to 16 digits in length. Bluetooth Range: 100m, 1km, or 10km?". bluair.pl. Archived from the original on

Critical Factor #2: Is your product enclosed in or mounted on metal?

For numeric comparison, MITM protection can be achieved with a simple equality comparison by the user. Bluetooth devices to talk to one another in the first place isn't always as simple as it should be. The world of mobile devices is changing as we move toward the so-called Internet of Things (where all kinds of everyday objects become net-connected)—and Bluetooth has to keep evolving to keep up. Bluetooth 5 provides, for BLE, options that can double the speed (2 Mbit/s burst) at the expense of range, or provide up to four times the range at the expense of data rate. The increase in transmissions could be important for Internet of Things devices, where many nodes connect throughout a whole house. Bluetooth 5 increases capacity of connectionless services such as location-relevant navigation [114] of low-energy Bluetooth connections. [115] [116] [117] The Bluetooth Core Specification provides for the connection of two or more piconets to form a scatternet, in which certain devices simultaneously play the master/leader role in one piconet and the slave role in another. Bluetooth's early incorporation into consumer electronics products continued at Vosi Technologies in Costa Mesa, California, initially overseen by founding members Bejan Amini and Tom Davidson. Vosi Technologies had been created by real estate developer Ivano Stegmenga, with United States Patent 608507, for communication between a cellular phone and a vehicle's audio system. At the time, Sony/Ericsson had only a minor market share in the cellular phone market, which was dominated in the US by Nokia and Motorola. Due to ongoing negotiations for an intended licensing agreement with Motorola beginning in the late 1990s, Vosi could not publicly disclose the intention, integration, and initial development of other enabled devices which were to be the first " Smart Home" internet connected devices.

The specification is published as Bluetooth v2.0 + EDR, which implies that EDR is an optional feature. Aside from EDR, the v2.0 specification contains other minor improvements, and products may claim compliance to "Bluetooth v2.0" without supporting the higher data rate. At least one commercial device states "Bluetooth v2.0 without EDR" on its data sheet. [81] Bluetooth 2.1 + EDR [ edit ]Metallic enclosures do pose real antenna integration challenges to engineers. There is a range of possible solutions, so the most suitable one will depend on the variables of your design. There is currently no supported method to install these patch files when using Home Assistant Operating System. Game consoles have been using Bluetooth as a wireless communications protocol for peripherals since the seventh generation, including Nintendo's Wii [45] and Sony's PlayStation 3 which use Bluetooth for their respective controllers. On Debian based host systems, the sudo apt-get -y install bluez command will install BlueZ. Installing a USB Bluetooth Adapter Notice that some features were already available in a Core Specification Addendum (CSA) before the release of v4.1.