iTHRVE chakras app has been designed to work with different sensors:
• iOS Camera (on your iPhone)
• iOS Bluetooth Fingertip Pulse Oximeter – the recommended sensor
PPG Mobile Phone Heart Rate Monitor Finger clip Sensor
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• Ear clip Bluetooth sensor
• Polar chest strap
All of these sensors can be used for short recording (less than 30 minutes): mainly designed for coherence and breath training.
Long recording (up to 8 hours and a half), can only be done with the use of a Polar chest strap or a compatible Bluetooth chest strap device.
The pressure wave (related to the Mayer wave or Craniosacral wave) can only be displayed with a finger sensor.
The light sensors devices (Berry finger sensor, the earclip sensor and the iOS camera) are very sensitive to movements of the sensor: they need you to be quite still- when used to achieve a good acquisition of data.