ToF (time-of-flight)
The ToF sensor is located on the top front side of the Nordic ID HH83 Barcode device, by the barcode scanner. It is used to trigger barcode scanning instead of using the Scan button. ToF mode is disabled by default. When enabled, the ToF sensor sends an artificial light signal. Barcode scanning is automatically performed while any item interrupts this signal, e.g., an object finger is placed in front of the sensor at a given (customizable) distance.
Enable and play with ToF sensor using Nordic ID RFID Demo in Android à Settings à Sensor
Light and proximity sensor
The light and sensors are located on the front side of the device, by the ear speaker.
The light sensor is used to adjust the brightness of the screen according to the ambient light (if the display brightness level is set to adaptative).
The proximity sensor detects when you have the phone up to your ear, so that touchscreen is switched off to prevent accidental tapping.
NFC reader
An NFC reader is located on the back side of the Nordic ID HH83/HH85. NFC antenna is indicated with a ((waves)) icon in the Nordic ID HH83 (there is no icon in the Nordic ID HH85).
Multiple NFC standards are supported, proximity and vicinity, which makes Nordic ID HH83/HH85 also compliant with existing NFC Android apps.
The Nordic ID RFID Demo app can also be used to read NFC tags and get basic information.
Position of NFC antenna in Nordic ID HH83 and Nordic ID HH85