Dexcom one User Manual page 73

includes reporting the corresponding measured
glucose sensor readings and alerts on the display
device.
Quality of service summary
Quality of Service for the Dexcom ONE System
wireless communication using Bluetooth Low
Energy is assured within the effective range of 6
meters, unobstructed, between the Dexcom ONE
transmitter and paired display device at regular
5-minute intervals. If connection is lost between
the transmitter and display device, upon re-
connection any missed packets (up to 3 hours) will
be transmitted from the transmitter to the display
device. The Dexcom ONE CGM System is designed
to only accept radio frequency (RF) communications
from recognized and paired display devices.
Security measures
The Dexcom ONE System is designed to transmit
data between the transmitter and designated
display devices in accordance to the industry
standard BLE protocols. It will not accept radio
frequency (RF) communications using any other
protocol, including Bluetooth classic communication
protocols.
In addition to the security provided by the BLE
connection, communication between the Dexcom
ONE transmitter and the Dexcom ONE receiver
and mobile application is protected by additional
levels of security and safety mitigations using an
encrypted and proprietary data format. This format
embeds various methods to verify data integrity
and to detect potential instances of data tampering.
While the format is proprietary, industry standard
encryption protocols (e.g., RSA and AES) are used
in different parts of this proprietary data format.
Unless disabled, the Dexcom ONE mobile
application regularly communicates with Dexcom
Servers. Communication between the Dexcom ONE
applications and Dexcom Servers is protected by
a number of mechanisms, designed to safeguard
against data corruption. This includes industry
standard JWIT token based authentication and
authorization. All such communication takes place
exclusively over an encrypted data path using
industry standard SSL format.
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Dexcom ONE User Guide
Technical information