The Bluetooth Asia Conference 2025 took place in Shenzhen from May 22-23, aiming to share the latest application advancements of Bluetooth technology across various industries and explore future development trends in the Bluetooth ecosystem. During the conference, Chen Wei, Product Director of Digital Key Products at YFORE, delivered an in-depth presentation on “Application Solutions of Bluetooth Channel Sounding Technology in the Vehicle Digital Key Field,” which garnered significant industry attention.
Three Core Pain Points: Traditional Bluetooth Technology Urgently Needs an Upgrade
With the acceleration of automotive intelligence, user demand for the “convenience” and “security” of digital keys is increasingly rising. Chen Wei highlighted in his presentation that while traditional Bluetooth RSSI (Received Signal Strength Indication) ranging technology has become mainstream due to its advantages such as “high user device penetration, low development costs, and mature technology,” it also exposes three core flaws:
Significant Environmental Interference:
Traditional Bluetooth RSSI is susceptible to interference from human bodies or surrounding structures, leading to issues like failed unlocking upon approach” and “overly distant locking.” This results in a poor user experience during vehicle lock/unlock processes and often leads to complaints.
Prominent Security Risks:
It is vulnerable to relay attacks. Hackers can forge key locations by amplifying or forwarding signals, leading to the theft of items from within the vehicle or even the entire vehicle.
High Calibration Costs:
Bluetooth RSSI performance varies significantly across different phone models, requiring substantial human resources and venues for individual adaptation and calibration, thus hindering large-scale application.
Innovative Phase Ranging Technology – Reshaping Bluetooth Positioning for Superior Performance
To address these traditional technical bottlenecks, YFORE has innovatively introduced Bluetooth Channel Sounding ranging technology. By integrating Phase-Based Ranging (PBR) and Round-Trip Time (RTT) ranging, YFORE has achieved comprehensive breakthroughs in ranging accuracy, security, and ease of use:
Leap in Accuracy:
Through joint calculation of phase difference and time difference, actual ranging error is controlled within ±0.7 meters within 10 meters without obstruction (traditional RSSI error can reach ±1-3 meters).
Enhanced Security:
Based on encrypted timestamps from ToF (Time-of-Flight) flight time, it fundamentally resists signal relay attacks, offering security comparable to UWB technology.
Efficiency Revolution:
It eliminates the need for individual calibration for each phone model, significantly lowering the technical implementation threshold for automakers and terminal manufacturers.
Redefining Smart Mobility – YFORE’s BLE 6.0 CS Digital Key
As the leading brand in emerging digital key solutions, YFORE possesses the industry’s most complete integrated technical solution encompassing “vehicle-end + cloud-end + smart terminal.” It also integrates communication protocol technologies such as BLE, SLE, UWB, and NFC, building a diversified digital key product matrix.
YFORE’s new generation of digital keys is developed based on the BLE 6.0 protocol, innovatively integrating the core function of Channel Sounding. Through Phase-Based Ranging (PBR) and Round-Trip Time (RTT) measurement technologies, it achieves precise two-way ranging between low-power Bluetooth devices, enabling more accurate positioning and enhanced security. This provides the industry with a new generation of digital key solutions that are “high-precision, easily compatible, and fast to deploy,” offering users a more stable unlock/lock experience of “no standing, no turning back, no fear of occlusion.”
YFORE’s BLE 6.0 Channel Sounding Digital Key has already secured project nominations and is expected to achieve mass production in the first half of 2026. With the large-scale deployment of BLE 6.0 Channel Sounding Digital Keys, the application of this technology in the intelligent automotive sector is poised for explosive breakthroughs. Let’s stay tuned!