CMSensorRecorder
E494402
CMSensorRecorder is an iOS Core Motion class that allows apps to record and retrieve historical motion sensor data, such as accelerometer readings, even when the app is not actively running.
All labels observed (1)
| Label | Occurrences |
|---|---|
| CMSensorRecorder canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5100957 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: CMSensorRecorder Context triple: [CoreMotion, APIClass, CMSensorRecorder]
-
A.
cumulative recorder
A cumulative recorder is a device used in behavioral psychology to automatically graph an organism’s responses over time, producing a continuous record of response rates.
-
B.
Motion Sense
Motion Sense is Google’s radar-based gesture control and presence detection technology that lets users interact with Pixel phones using hand movements without touching the screen.
-
C.
IMU
IMU (Inertial Measurement Unit) is a motion-sensing device that measures and reports an object's specific force, angular rate, and sometimes orientation, commonly used in robotics, navigation, and mobile devices.
-
D.
IMU
IMU is a global non-governmental organization devoted to promoting international cooperation and advancement in mathematics.
-
E.
Spectral Recording
Spectral Recording is an advanced professional analog noise reduction system developed by Dolby Laboratories to improve the dynamic range and clarity of audio recordings.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: CMSensorRecorder Target entity description: CMSensorRecorder is an iOS Core Motion class that allows apps to record and retrieve historical motion sensor data, such as accelerometer readings, even when the app is not actively running.
-
A.
cumulative recorder
A cumulative recorder is a device used in behavioral psychology to automatically graph an organism’s responses over time, producing a continuous record of response rates.
-
B.
Motion Sense
Motion Sense is Google’s radar-based gesture control and presence detection technology that lets users interact with Pixel phones using hand movements without touching the screen.
-
C.
IMU
IMU (Inertial Measurement Unit) is a motion-sensing device that measures and reports an object's specific force, angular rate, and sometimes orientation, commonly used in robotics, navigation, and mobile devices.
-
D.
IMU
IMU is a global non-governmental organization devoted to promoting international cooperation and advancement in mathematics.
-
E.
Spectral Recording
Spectral Recording is an advanced professional analog noise reduction system developed by Dolby Laboratories to improve the dynamic range and clarity of audio recordings.
- F. None of above. chosen
Statements (41)
| Predicate | Object |
|---|---|
| instanceOf |
Core Motion API
ⓘ
Objective-C class ⓘ Swift-bridged class ⓘ iOS framework class ⓘ |
| authorizationCheck | developers should call isAuthorizedForRecording ⓘ |
| availabilityCheck | developers should call isAccelerometerRecordingAvailable ⓘ |
| category | motion sensing API ⓘ |
| dataPersistence | stored on device ⓘ |
| dataType | timestamped accelerometer samples ⓘ |
| documentationSite | Apple Developer Documentation ⓘ |
| framework |
CoreMotion.framework
ⓘ
linked to:
CoreMotion
|
| hasMethod |
+accelerometerDataFrom:to:
ⓘ
+isAccelerometerRecordingAvailable ⓘ +isAuthorizedForRecording ⓘ +resetDatabases ⓘ -recordAccelerometerForDuration: ⓘ |
| headerFile | <CoreMotion/CoreMotion.h> ⓘ |
| introducedIn | iOS 8 ⓘ |
| languageBindings |
Objective-C
ⓘ
Swift ⓘ |
| owner | Apple Inc. ⓘ |
| partOf |
Core Motion framework
ⓘ
linked to:
CoreMotion
|
| persistenceDuration | limited historical window (implementation-defined by iOS) ⓘ |
| platform |
iOS
ⓘ
watchOS ⓘ |
| purpose | record motion sensor data for later retrieval ⓘ |
| recordsSensor | accelerometer ⓘ |
| relatedClass |
CMMotionManager
ⓘ
CMSensorDataList ⓘ |
| relatedFramework |
HealthKit
ⓘ
linked to:
HealthKit framework
|
| requires |
device motion hardware
ⓘ
user motion access authorization ⓘ |
| returnsDataType | CMSensorDataList ⓘ |
| supports |
accelerometer data recording
ⓘ
background motion data recording ⓘ historical motion data retrieval ⓘ recording while app is not running ⓘ |
| threading | callbacks may be delivered on unspecified queue ⓘ |
| useCase |
activity tracking
ⓘ
fitness applications ⓘ research and analytics apps ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: CMSensorRecorder Description of subject: CMSensorRecorder is an iOS Core Motion class that allows apps to record and retrieve historical motion sensor data, such as accelerometer readings, even when the app is not actively running.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.