Near field telemetry link for passing a shared secret to establish a secure radio frequency communication link in a physiological condition monitoring system
First Claim
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1. A method for pairing a wireless physiological condition monitoring system, comprising:
- placing a physiological condition meter in proximity with a physiological condition sensor;
receiving an instruction to initialize communication between the physiological condition meter and the physiological condition sensor;
in response to the received instruction and the physiological condition meter being in proximity with the physiological condition sensor, generating a secret key at one of the physiological condition meter and the physiological condition sensor using a random process, and transmitting the secret key to the one of the physiological condition meter and the physiological condition sensor via a first communication link to provide a shared key that is shared between the physiological condition meter and the physiological condition sensor; and
transmitting measurement data to the physiological condition meter from the physiological condition sensor via a secure wireless link based on the secret key;
wherein the secret key is not generated until after the physiological condition meter and the physiological condition sensor are placed proximally to each other, andgenerating the secret key does not employ user input of an identifier of the physiological condition sensor.
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Abstract
A physiological condition monitoring system (e.g., a continuous glucose monitoring system) includes a physiological condition meter and a physiological condition sensor. The physiological condition meter and the physiological condition sensor are be placed in proximity to exchange a secret key using a near field wireless link, which is used to encrypt data to secure a radio frequency (RF) wireless channel.
26 Citations
31 Claims
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1. A method for pairing a wireless physiological condition monitoring system, comprising:
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placing a physiological condition meter in proximity with a physiological condition sensor; receiving an instruction to initialize communication between the physiological condition meter and the physiological condition sensor; in response to the received instruction and the physiological condition meter being in proximity with the physiological condition sensor, generating a secret key at one of the physiological condition meter and the physiological condition sensor using a random process, and transmitting the secret key to the one of the physiological condition meter and the physiological condition sensor via a first communication link to provide a shared key that is shared between the physiological condition meter and the physiological condition sensor; and transmitting measurement data to the physiological condition meter from the physiological condition sensor via a secure wireless link based on the secret key; wherein the secret key is not generated until after the physiological condition meter and the physiological condition sensor are placed proximally to each other, and generating the secret key does not employ user input of an identifier of the physiological condition sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A wireless physiological condition monitoring system, comprising:
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a physiological condition sensor for measuring physiological condition data of a user and transmitting the measured physiological condition data using a secure wireless link based on a secret key upon receiving an instruction to initialize communication between a physiological condition meter and the physiological condition sensor; and the physiological condition meter for receiving the measured physiological condition data via the secure wireless link based on the secret key and displaying the measured physiological condition data to the user, wherein, in response to the instruction provided when the physiological condition sensor and the physiological condition meter are in proximity to each other, the secret key is generated using a random process and transmitted using a second communication link; wherein the secret key is not generated until after the physiological condition meter and the physiological condition sensor are placed proximally to each other, and generating the secret key does not employ user input of an identifier of the physiological condition sensor. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A method for synchronizing a wireless physiological condition monitoring system, comprising:
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receiving an instruction to initialize communication between a physiological condition sensor and a physiological condition meter; in response to the instruction, generating a secret key using a random process at one of the physiological condition meter and the physiological condition sensor and transmitting the secret key to the one of the physiological condition meter and the physiological condition sensor via a near field communication (NFC) wireless inductive link when the physiological condition meter is in proximity with the physiological condition sensor, the secret key not being generated until after the physiological condition meter and the physiological condition sensor are placed proximally to each other, and generating the secret key does not employ user input of an identifier of the physiological condition sensor; receiving the secret key via the wireless inductive link; encrypting data to be transmitted between the physiological condition sensor and physiological condition meter; and transmitting the encrypted data between the physiological condition sensor and the physiological condition meter via a second wireless link. - View Dependent Claims (30, 31)
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Specification