# US 2018/0025146 A1 · Method for secure synchronization and pairing between devices and apparatus using the method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0025146 A1 - Document ID: US20180025146A1 - Status: Published application - Kind: A1 - Application number: 15/459,147 - Filed: 2017-03-15 - Published: 2018-01-25 - Earliest claimed: 2016-07-20 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Ihor VASYLTSOV; Chang-gyu BAK - Web page: https://patentgrep.com/patent/US20180025146A1 ## CPC - G06F 21/34: involving the use of external additional devices, e.g. dongles or smart cards - G06F 21/32: using biometric data, e.g. fingerprints, iris scans or voiceprints - G06F 21/35: communicating wirelessly - H04L 9/0866: {involving user or device identifiers, e.g. serial number, physical or biometrical information, DNA, hand-signature or measurable physical characteristics} - H04L 2209/88: Medical equipments - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract An electronic device includes a biomedical sensor configured to generate a first signal by detecting a biomedical signal, a motion sensor configured to generate a second signal by detecting a motion, and a communication interface configured to provide a secure communication channel with another electronic device, and receive a third signal through the secure communication channel. The electronic device further includes a controller configured to generate a secret key for the secure communication channel, based on the first signal, and determine whether to perform a predetermined function, based on the second signal and the received third signal. ## Claims ### Claim 1 An electronic device comprising: a biomedical sensor configured to generate a first signal by detecting a biomedical signal; a motion sensor configured to generate a second signal by detecting a motion; a communication interface configured to: provide a secure communication channel with another electronic device; and receive a third signal through the secure communication channel; and a controller configured to: generate a secret key for the secure communication channel, based on the first signal; and determine whether to perform a predetermined function, based on the second signal and the received third signal. ### Claim 2 (depends on 1) The electronic device of claim 1, wherein the controller is further configured to: extract interpulse intervals from the first signal; and generate the secret key, based on of the extracted interpulse intervals. ### Claim 3 (depends on 1) The electronic device of claim 1, wherein the controller is further configured to: generate data by encoding the first signal; estimate entropy of the data; and generate the secret key, based on the data, in response to the estimated entropy being substantially greater than or equal to a predetermined value. ### Claim 4 (depends on 1) The electronic device of claim 1, wherein the controller is further configured to generate the secret key, further based on the second signal. ### Claim 5 (depends on 1) The electronic device of claim 1, wherein the biomedical sensor comprises biomedical signal sensors configured to respectively detect different biomedical signals, and the biomedical sensor is further configured to generate the first signal, based on the different biomedical signals. ### Claim 6 (depends on 1) The electronic device of claim 1, wherein the communication interface is further configured to: receive data through the secure communication channel; and generate the third signal by decoding the received data, using the secret key. ### Claim 7 (depends on 1) The electronic device of claim 1, wherein the third signal is generated by detecting a motion of the other electronic device, and the controller is further configured to determine whether to perform the predetermined function by comparing the second signal with the received third signal. ### Claim 8 (depends on 7) The electronic device of claim 7, wherein the controller is configured to determine whether to perform the predetermined function by comparing the second signal with the received third signal in a frequency-domain. ### Claim 9 (depends on 7) The electronic device of claim 7, further comprising a storage configured to store a motion profile, wherein the controller is further configured to determine whether to perform the predetermined function by comparing a motion corresponding to the second signal or the received third signal with the motion profile. ### Claim 10 (depends on 7) The electronic device of claim 7, wherein the controller is further configured to transmit a request for the third signal to the other electronic device through the communication interface in response to the detected motion corresponding to the second signal being a predetermined motion. ### Claim 11 (depends on 1) The electronic device of claim 1, wherein the predetermined function is a function for releasing a lock mode of the electronic device. ### Claim 12 (depends on 1) The electronic device of claim 1, wherein the predetermined function is a function for transmitting a signal for requesting a release of the lock mode to the other electronic device through the communication interface. ### Claim 13 (depends on 1) The electronic device of claim 1, further comprising an environmental signal measurer configured to generate a fourth signal by measuring any one or any combination of environmental signals of the electronic device, wherein the controller is further configured to generate the secret key or determine whether to perform the predetermined function, further based on the fourth signal. ### Claim 14 (depends on 13) The electronic device of claim 13, wherein the environmental signal measurer is further configured to generate the fourth signal by measuring radio frequency signals around the electronic device, and the controller is further configured to: determine a triangular location of the electronic device, based on the fourth signal; and generate the secret key or determine whether to perform the predetermined function, further based on the determined triangular location. ### Claim 15 (depends on 14) The electronic device of claim 14, wherein the controller is further configured to: synchronize the second signal and the third signal, based on the fourth signal; and determine whether to perform the predetermined function by further comparing the synchronized second signal with the synchronized third signal. ### Claim 16 (depends on 1) The electronic device of claim 1, wherein the electronic device is a mobile phone, and the other electronic device comprises a wearable electronic device. ### Claim 17 (depends on 1) The electronic device of claim 1, wherein the controller is further configured to: remove noise from the second signal and the third signal; synchronize the second signal and the third signal from which the noise is removed; and determine whether to perform the predetermined function by comparing the synchronized second signal with the synchronized third signal. ### Claim 18 (depends on 1) The electronic device of claim 1, further comprising a storage configured to store a personal profile of a user of the electronic device, wherein the controller is further configured to: generate data by encoding the first signal; estimate entropy of the data, based on the personal profile; and generate the secret key, based on the data and the personal profile, in response to the estimated entropy being substantially greater than or equal to a predetermined value. ### Claim 19 A method that is performed by an electronic device, the method comprising: generating a first signal by detecting a biomedical signal; generating a second signal by detecting a motion; providing a secure communication channel with another electronic device; receiving a third signal through the secure communication channel; generating a secret key for the secure communication channel, based on the first signal; and determining whether to perform a predetermined function, based on the second signal and the received third signal. ### Claim 20 An electronic device comprising: a biomedical sensor configured to generate a biomedical signal; a motion sensor configured to generate a first motion signal; a communication interface configured to: provide a secure communication channel with another electronic device; and receive a second motion signal from the other electronic device through the secure communication channel; and a controller configured to: generate a secret key for the secure communication channel, based on the biomedical signal; enter a lock mode of the electronic device; decode the received second motion signal, using the secret key; determine whether the first motion signal is identical to the decoded second motion signal; and release the lock mode in response to the determination that the first motion signal is identical to the decoded second motion signal.