Dexcom G7 User Manual page 159

Security measures
The G7 system uses the following interfaces and communication protocols:
Sensor: Bluetooth Low Energy
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Receiver: Bluetooth Low Energy and USB
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Phone and watch apps: Bluetooth Low Energy to sensor. The phone app
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supports Transport Layer Security (TLS) to Dexcom data platform using cellular
data or Wi-Fi.
The G7 System is designed to transmit data between the transmitter and designated
display devices in accordance to the industry standard Bluetooth Low Energy
protocols. It will not accept radio frequency (RF) communications using any other
protocol, including Bluetooth classic communication protocols.
Don't pair your sensor over Bluetooth in public or populated areas. Bluetooth pairing
should be done in a private and safe location to reduce cyber risks such as
eavesdropping.
In addition to the security provided by the Bluetooth Low Energy connection,
communication between the G7 transmitter, G7 receiver, and mobile applications is
protected by additional levels of security and safety mitigations using an encrypted
and proprietary data format. This format embeds various industry standard encryption
protocols and methods to protect data, verify data integrity, and to detect and prevent
data tampering.
You are responsible for securing your display devices. If security is compromised, it
may affect the Dexcom data shown on the display device.
Use these tips to help secure a smart device:
Secure network: Only connect to a trusted/secure network.
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Secure smart device: Don't use the G7 phone or watch app on a jailbroken
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(Apple) or rooted (Android) smart device.
F • Technical Information | Dexcom G7 User Guide 151