Beacon Positioning Algorithms: From RSSI to Reliable Coordinates
A Bluetooth beacon is dumb by design: it wakes, transmits a small payload, and goes back to sleep. The position of a receiver is computed elsewhere, by software that turns…
Bluetooth Module Peripheral Interfacing: I2C, SPI, UART, and Driver Architecture
A Bluetooth module is not just a radio. Under the shield sits a real MCU with GPIO, I2C, SPI, UART, ADC, PWM, and timers. How you wire sensors and peripherals…
BLE Tag Wake-up Receiver and Scheduled Listening: Reachable Without Draining the Battery
Most BLE Tag designs are either pure broadcasters (a locator that never listens) or continuous scanners (a tag that must hear a gateway ping). The broadcaster is invisible to centralized…
Bluetooth Beacon Security: Spoofing, Eavesdropping, and Replay in the Field
A Bluetooth Beacon is a loudspeaker in a crowded room: it broadcasts the same packet to everyone within range, with no pairing and no authentication by default. That openness is…
Bluetooth Module Antenna Design: Matching Networks, Ground Planes, and Real-World Range
A Bluetooth module's radio is only as good as the antenna bolted to it. You can buy the most sensitive SoC on the market, but if the antenna is mismatched,…
BLE Tag Mass Provisioning & Secure Enrollment: From Factory Floor to Trusted Fleet
A BLE Tag is cheap until you have ten thousand of them. The moment a fleet leaves the factory, every tag must already carry a unique, trustworthy identity — otherwise…
Beacon Site Survey & RF Planning: From Floor Plan to Reliable Coverage
A Bluetooth Beacon deployment that looks perfect on a floor plan often falls apart in the real building. Drywall, shelving, freezers, and human bodies all eat RF, and a 3…
Bluetooth Module Secure Boot: Firmware Signing and Root of Trust
Ship a Bluetooth module with unsigned firmware and you have implicitly trusted anyone who can flash it. A competitor clones your product, an attacker drops a backdoor, or a bad…
BLE Tag Anti-Tracking Protection: Engineering Unwanted-Tracking Detection
A standard BLE Tag is a coin-sized beacon you clip to keys, a laptop, a pallet, or a patient wristband so you can find it later. That same convenience is…
Relay Bluetooth Beacon: Extending Coverage Past the Gateway Horizon
A standard Bluetooth Beacon just broadcasts. It wakes from a timer, pushes an advertising packet, and goes back to sleep. The model assumes a gateway or smartphone is within radio…